diff --git a/packages/server-nest/package.json b/packages/server-nest/package.json
index d364dd61c..cd08509d3 100644
--- a/packages/server-nest/package.json
+++ b/packages/server-nest/package.json
@@ -17,7 +17,7 @@
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./test/jest-e2e.json"
+    "test:e2e": "jest --config ./test/jest-e2e.json --watchAll"
   },
   "dependencies": {
     "@nestjs/bull": "^10.2.1",
@@ -34,6 +34,8 @@
     "@nestjs/throttler": "^6.2.1",
     "@types/passport-local": "^1.0.38",
     "@types/ramda": "^0.30.2",
+    "js-money": "^0.6.3",
+    "accounting": "^0.4.1",
     "bull": "^4.16.3",
     "bullmq": "^5.21.1",
     "cache-manager": "^6.1.1",
diff --git a/packages/server-nest/src/modules/App/App.module.ts b/packages/server-nest/src/modules/App/App.module.ts
index 9123140eb..058f5edaa 100644
--- a/packages/server-nest/src/modules/App/App.module.ts
+++ b/packages/server-nest/src/modules/App/App.module.ts
@@ -29,6 +29,8 @@ import { APP_GUARD, APP_INTERCEPTOR } from '@nestjs/core';
 import { JwtAuthGuard } from '../Auth/Jwt.guard';
 import { UserIpInterceptor } from '@/interceptors/user-ip.interceptor';
 import { TenancyGlobalMiddleware } from '../Tenancy/TenancyGlobal.middleware';
+import { TransformerInjectable } from '../Transformer/TransformerInjectable.service';
+import { TransformerModule } from '../Transformer/Transformer.module';
 
 @Module({
   imports: [
@@ -100,6 +102,7 @@ import { TenancyGlobalMiddleware } from '../Tenancy/TenancyGlobal.middleware';
     },
     AppService,
     JwtStrategy,
+    
   ],
 })
 export class AppModule {
diff --git a/packages/server-nest/src/modules/Items/GetItem.service.ts b/packages/server-nest/src/modules/Items/GetItem.service.ts
index b990ef0eb..4ebb69ccb 100644
--- a/packages/server-nest/src/modules/Items/GetItem.service.ts
+++ b/packages/server-nest/src/modules/Items/GetItem.service.ts
@@ -8,7 +8,7 @@ import { ItemTransformer } from './Item.transformer';
 @Injectable()
 export class GetItemService {
   constructor(
-    @Inject(Item)
+    @Inject(Item.name)
     private itemModel: typeof Item,
     private eventEmitter2: EventEmitter2,
     private transformerInjectable: TransformerInjectable,
diff --git a/packages/server-nest/src/modules/Items/Item.controller.ts b/packages/server-nest/src/modules/Items/Item.controller.ts
index 4f9324f22..6abc6a214 100644
--- a/packages/server-nest/src/modules/Items/Item.controller.ts
+++ b/packages/server-nest/src/modules/Items/Item.controller.ts
@@ -98,4 +98,48 @@ export class ItemsController extends TenantController {
     const itemId = parseInt(id, 10);
     return this.itemsApplication.getItem(itemId);
   }
+
+  /**
+   * Retrieves the item associated invoices transactions.
+   * @param {string} id
+   * @returns {Promise<any>}
+   */
+  @Get(':id/invoices')
+  async getItemInvoicesTransactions(@Param('id') id: string): Promise<any> {
+    const itemId = parseInt(id, 10);
+    return this.itemsApplication.getItemInvoicesTransactions(itemId);
+  }
+
+  /**
+   * Retrieves the item associated bills transactions.
+   * @param {string} id
+   * @returns {Promise<any>}
+   */
+  @Get(':id/bills')
+  async getItemBillTransactions(@Param('id') id: string): Promise<any> {
+    const itemId = parseInt(id, 10);
+    return this.itemsApplication.getItemBillTransactions(itemId);
+  }
+
+  /**
+   * Retrieves the item associated estimates transactions.
+   * @param {string} id
+   * @returns {Promise<any>}
+   */
+  @Get(':id/estimates')
+  async getItemEstimatesTransactions(@Param('id') id: string): Promise<any> {
+    const itemId = parseInt(id, 10);
+    return this.itemsApplication.getItemEstimatesTransactions(itemId);
+  }
+
+  /**
+   * Retrieves the item associated receipts transactions.
+   * @param {string} id
+   * @returns {Promise<any>}
+   */
+  @Get(':id/receipts')
+  async getItemReceiptTransactions(@Param('id') id: string): Promise<any> {
+    const itemId = parseInt(id, 10);
+    return this.itemsApplication.getItemReceiptsTransactions(itemId);
+  }
 }
diff --git a/packages/server-nest/src/modules/Items/ItemBillsTransactions.transformer.ts b/packages/server-nest/src/modules/Items/ItemBillsTransactions.transformer.ts
new file mode 100644
index 000000000..b4d40229d
--- /dev/null
+++ b/packages/server-nest/src/modules/Items/ItemBillsTransactions.transformer.ts
@@ -0,0 +1,96 @@
+import { Transformer } from '../Transformer/Transformer';
+
+export class ItemBillTransactionTransformer extends Transformer {
+  /**
+   * Include these attributes to sale invoice object.
+   * @returns {Array}
+   */
+  public includeAttributes = (): string[] => {
+    return [
+      'formattedAmount',
+      'formattedBillDate',
+      'formattedRate',
+      'formattedCost',
+    ];
+  };
+
+  /**
+   * Formatted sell price.
+   * @param item
+   * @returns {string}
+   */
+  public formattedAmount(item): string {
+    return this.formatNumber(item.amount, {
+      currencyCode: item.bill.currencyCode,
+    });
+  }
+
+  /**
+   * Formatted bill date.
+   * @param item
+   * @returns {string}
+   */
+  public formattedBillDate = (entry): string => {
+    return this.formatDate(entry.bill.billDate);
+  };
+
+  /**
+   * Formatted quantity.
+   * @returns {string}
+   */
+  public formattedQuantity = (entry): string => {
+    return entry.quantity;
+  };
+
+  /**
+   * Formatted rate.
+   * @param entry
+   * @returns {string}
+   */
+  public formattedRate = (entry): string => {
+    return this.formatNumber(entry.rate, {
+      currencyCode: entry.bill.currencyCode,
+    });
+  };
+
+  /**
+   * Formatted bill due date.
+   * @param entry
+   * @returns
+   */
+  public formattedBillDueDate = (entry): string => {
+    return this.formatDate(entry.bill.dueDate);
+  };
+
+  /**
+   *
+   * @param entry
+   * @returns
+   */
+  public transform = (entry) => {
+    return {
+      billId: entry.bill.id,
+
+      billNumber: entry.bill.billNumber,
+      referenceNumber: entry.bill.referenceNo,
+
+      billDate: entry.bill.billDate,
+      formattedBillDate: entry.formattedBillDate,
+
+      billDueDate: entry.bill.dueDate,
+      formattedBillDueDate: entry.formattedBillDueDate,
+
+      amount: entry.amount,
+      formattedAmount: entry.formattedAmount,
+
+      quantity: entry.quantity,
+      formattedQuantity: entry.formattedQuantity,
+
+      rate: entry.rate,
+      formattedRate: entry.formattedRate,
+
+      vendorDisplayName: entry.bill.vendor.displayName,
+      vendorCurrencyCode: entry.bill.vendor.currencyCode,
+    };
+  };
+}
diff --git a/packages/server-nest/src/modules/Items/ItemEstimatesTransaction.transformer.ts b/packages/server-nest/src/modules/Items/ItemEstimatesTransaction.transformer.ts
new file mode 100644
index 000000000..e9009a8e6
--- /dev/null
+++ b/packages/server-nest/src/modules/Items/ItemEstimatesTransaction.transformer.ts
@@ -0,0 +1,81 @@
+import { Transformer } from '../Transformer/Transformer';
+
+export class ItemEstimateTransactionTransformer extends Transformer {
+  /**
+   * Include these attributes to sale invoice object.
+   * @returns {Array}
+   */
+  public includeAttributes = (): string[] => {
+    return [
+      'formattedAmount',
+      'formattedEstimateDate',
+      'formattedRate',
+      'formattedCost',
+    ];
+  };
+
+  /**
+   * Formatted sell price.
+   * @returns {string}
+   */
+  public formattedAmount(item): string {
+    return this.formatNumber(item.amount, {
+      currencyCode: item.estimate.currencyCode,
+    });
+  }
+
+  /**
+   * Formatted estimate date.
+   * @returns {string}
+   */
+  public formattedEstimateDate = (entry): string => {
+    return this.formatDate(entry.estimate.estimateDate);
+  };
+
+  /**
+   * Formatted quantity.
+   * @returns {string}
+   */
+  public formattedQuantity = (entry): string => {
+    return entry.quantity;
+  };
+
+  /**
+   * Formatted rate.
+   * @returns {string}
+   */
+  public formattedRate = (entry): string => {
+    return this.formatNumber(entry.rate, {
+      currencyCode: entry.estimate.currencyCode,
+    });
+  };
+
+  /**
+   * Transform the entry.
+   * @param {any} entry
+   * @returns {any}
+   */
+  public transform = (entry) => {
+    return {
+      estimateId: entry.estimate.id,
+
+      estimateNumber: entry.estimate.estimateNumber,
+      referenceNumber: entry.estimate.referenceNo,
+
+      estimateDate: entry.estimate.estimateDate,
+      formattedEstimateDate: entry.formattedEstimateDate,
+
+      amount: entry.amount,
+      formattedAmount: entry.formattedAmount,
+
+      quantity: entry.quantity,
+      formattedQuantity: entry.formattedQuantity,
+
+      rate: entry.rate,
+      formattedRate: entry.formattedRate,
+
+      customerDisplayName: entry.estimate.customer.displayName,
+      customerCurrencyCode: entry.estimate.customer.currencyCode,
+    };
+  };
+}
diff --git a/packages/server-nest/src/modules/Items/ItemInvoicesTransactions.transformer.ts b/packages/server-nest/src/modules/Items/ItemInvoicesTransactions.transformer.ts
new file mode 100644
index 000000000..b0758fcbf
--- /dev/null
+++ b/packages/server-nest/src/modules/Items/ItemInvoicesTransactions.transformer.ts
@@ -0,0 +1,84 @@
+import { Transformer } from '../Transformer/Transformer';
+
+export class ItemInvoicesTransactionsTransformer extends Transformer {
+  /**
+   * Include these attributes to sale invoice object.
+   * @returns {Array}
+   */
+  public includeAttributes = (): string[] => {
+    return [
+      'formattedAmount',
+      'formattedInvoiceDate',
+      'formattedRate',
+      'formattedCost',
+    ];
+  };
+
+  /**
+   * Formatted sell price.
+   * @param item
+   * @returns {string}
+   */
+  public formattedAmount(item): string {
+    return this.formatNumber(item.amount, {
+      currencyCode: item.invoice.currencyCode,
+    });
+  }
+
+  /**
+   * Formatted invoice date.
+   * @param item
+   * @returns
+   */
+  public formattedInvoiceDate = (entry): string => {
+    return this.formatDate(entry.invoice.invoiceDate);
+  };
+
+  /**
+   * Formatted item quantity.
+   * @returns {string}
+   */
+  public formattedQuantity = (entry): string => {
+    return entry.quantity;
+  };
+
+  /**
+   * Formatted date.
+   * @param entry
+   * @returns {string}
+   */
+  public formattedRate = (entry): string => {
+    return this.formatNumber(entry.rate, {
+      currencyCode: entry.invoice.currencyCode,
+    });
+  };
+
+  /**
+   *
+   * @param {any} entry
+   * @returns {any}
+   */
+  public transform = (entry) => {
+    return {
+      invoiceId: entry.invoice.id,
+
+      invoiceNumber: entry.invoice.invoiceNo,
+      referenceNumber: entry.invoice.referenceNo,
+
+      invoiceDate: entry.invoice.invoiceDate,
+      formattedInvoiceDate: entry.formattedInvoiceDate,
+
+      amount: entry.amount,
+      formattedAmount: entry.formattedAmount,
+
+      quantity: entry.quantity,
+      formattedQuantity: entry.formattedQuantity,
+
+      rate: entry.rate,
+      formattedRate: entry.formattedRate,
+
+      customerDisplayName: entry.invoice.customer.displayName,
+      customerCurrencyCode: entry.invoice.customer.currencyCode,
+    };
+  };
+}
diff --git a/packages/server-nest/src/modules/Items/ItemReceiptsTransactions.transformer.ts b/packages/server-nest/src/modules/Items/ItemReceiptsTransactions.transformer.ts
new file mode 100644
index 000000000..6d8608534
--- /dev/null
+++ b/packages/server-nest/src/modules/Items/ItemReceiptsTransactions.transformer.ts
@@ -0,0 +1,85 @@
+import { Transformer } from '../Transformer/Transformer';
+
+export class ItemReceiptTransactionTransformer extends Transformer {
+  /**
+   * Include these attributes to sale invoice object.
+   * @returns {Array}
+   */
+  public includeAttributes = (): string[] => {
+    return [
+      'formattedAmount',
+      'formattedReceiptDate',
+      'formattedRate',
+      'formattedCost',
+    ];
+  };
+
+  /**
+   * Formatted sell price.
+   * @param item
+   * @returns {string}
+   */
+  public formattedAmount(item): string {
+    return this.formatNumber(item.amount, {
+      currencyCode: item.receipt.currencyCode,
+    });
+  }
+
+  /**
+   * Formatted receipt date.
+   * @param {any} entry
+   * @returns {string}
+   */
+  public formattedReceiptDate = (entry): string => {
+    return this.formatDate(entry.receipt.receiptDate);
+  };
+
+  /**
+   * Formatted quantity.
+   * @param {any} entry
+   * @returns {string}
+   */
+  public formattedQuantity = (entry): string => {
+    return entry.quantity;
+  };
+
+  /**
+   * Formatted rate.
+   * @param {any} entry
+   * @returns {string}
+   */
+  public formattedRate = (entry): string => {
+    return this.formatNumber(entry.rate, {
+      currencyCode: entry.receipt.currencyCode,
+    });
+  };
+
+  /**
+   * Transform the entry.
+   * @param {any} entry
+   * @returns {any}
+   */
+  public transform = (entry) => {
+    return {
+      receiptId: entry.receipt.id,
+
+      receipNumber: entry.receipt.receiptNumber,
+      referenceNumber: entry.receipt.referenceNo,
+
+      receiptDate: entry.receipt.receiptDate,
+      formattedReceiptDate: entry.formattedReceiptDate,
+
+      amount: entry.amount,
+      formattedAmount: entry.formattedAmount,
+
+      quantity: entry.quantity,
+      formattedQuantity: entry.formattedQuantity,
+
+      rate: entry.rate,
+      formattedRate: entry.formattedRate,
+
+      customerDisplayName: entry.receipt.customer.displayName,
+      customerCurrencyCode: entry.receipt.customer.currencyCode,
+    };
+  };
+}
diff --git a/packages/server-nest/src/modules/Items/ItemTransactions.service.ts b/packages/server-nest/src/modules/Items/ItemTransactions.service.ts
new file mode 100644
index 000000000..306c0caca
--- /dev/null
+++ b/packages/server-nest/src/modules/Items/ItemTransactions.service.ts
@@ -0,0 +1,108 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { ItemInvoicesTransactionsTransformer } from './ItemInvoicesTransactions.transformer';
+import { ItemEstimateTransactionTransformer } from './ItemEstimatesTransaction.transformer';
+import { ItemBillTransactionTransformer } from './ItemBillsTransactions.transformer';
+import { ItemReceiptTransactionTransformer } from './ItemReceiptsTransactions.transformer';
+import { TransformerInjectable } from '../Transformer/TransformerInjectable.service';
+import { ItemEntry } from './models/ItemEntry';
+
+@Injectable()
+export class ItemTransactionsService {
+  constructor(
+    private transformer: TransformerInjectable,
+
+    @Inject(ItemEntry.name)
+    private readonly itemEntry: typeof ItemEntry,
+  ) {}
+
+  /**
+   * Retrieves the item associated invoices transactions.
+   * @param {number} itemId -
+   */
+  public async getItemInvoicesTransactions(itemId: number) {
+    const invoiceEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'SaleInvoice')
+      .withGraphJoined('invoice.customer(selectCustomerColumns)')
+      .orderBy('invoice:invoiceDate', 'ASC')
+      .modifiers({
+        selectCustomerColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed invoice entries.
+    return this.transformer.transform(
+      invoiceEntries,
+      new ItemInvoicesTransactionsTransformer(),
+    );
+  }
+
+  /**
+   * Retrieve the item associated invoices transactions.
+   * @param {number} itemId
+   * @returns
+   */
+  public async getItemBillTransactions(itemId: number) {
+    const billEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'Bill')
+      .withGraphJoined('bill.vendor(selectVendorColumns)')
+      .orderBy('bill:billDate', 'ASC')
+      .modifiers({
+        selectVendorColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed bill entries.
+    return this.transformer.transform(
+      billEntries,
+      new ItemBillTransactionTransformer(),
+    );
+  }
+
+  /**
+   * Retrieves the item associated estimates transactions.
+   * @param {number} itemId
+   * @returns
+   */
+  public async getItemEstimateTransactions(itemId: number) {
+    const estimatesEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'SaleEstimate')
+      .withGraphJoined('estimate.customer(selectCustomerColumns)')
+      .orderBy('estimate:estimateDate', 'ASC')
+      .modifiers({
+        selectCustomerColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed estimates entries.
+    return this.transformer.transform(
+      estimatesEntries,
+      new ItemEstimateTransactionTransformer(),
+    );
+  }
+
+  /**
+   * Retrieves the item associated receipts transactions.
+   * @param {number} itemId
+   * @returns
+   */
+  public async getItemReceiptTransactions(itemId: number) {
+    const receiptsEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'SaleReceipt')
+      .withGraphJoined('receipt.customer(selectCustomerColumns)')
+      .orderBy('receipt:receiptDate', 'ASC')
+      .modifiers({
+        selectCustomerColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed receipts entries.
+    return this.transformer.transform(
+      receiptsEntries,
+      new ItemReceiptTransactionTransformer(),
+    );
+  }
+}
diff --git a/packages/server-nest/src/modules/Items/Items.module.ts b/packages/server-nest/src/modules/Items/Items.module.ts
index ebbf3dc64..d85f6bf81 100644
--- a/packages/server-nest/src/modules/Items/Items.module.ts
+++ b/packages/server-nest/src/modules/Items/Items.module.ts
@@ -9,6 +9,9 @@ import { EditItemService } from './EditItem.service';
 import { InactivateItem } from './InactivateItem.service';
 import { ActivateItemService } from './ActivateItem.service';
 import { ItemsApplicationService } from './ItemsApplication.service';
+import { ItemTransactionsService } from './ItemTransactions.service';
+import { GetItemService } from './GetItem.service';
+import { TransformerInjectable } from '../Transformer/TransformerInjectable.service';
 
 @Module({
   imports: [TenancyDatabaseModule],
@@ -21,7 +24,10 @@ import { ItemsApplicationService } from './ItemsApplication.service';
     ActivateItemService,
     DeleteItemService,
     ItemsApplicationService,
+    GetItemService,
+    ItemTransactionsService,
     TenancyContext,
+    TransformerInjectable,
   ],
 })
 export class ItemsModule {}
diff --git a/packages/server-nest/src/modules/Items/ItemsApplication.service.ts b/packages/server-nest/src/modules/Items/ItemsApplication.service.ts
index 5509cb7b9..d88d54d04 100644
--- a/packages/server-nest/src/modules/Items/ItemsApplication.service.ts
+++ b/packages/server-nest/src/modules/Items/ItemsApplication.service.ts
@@ -7,7 +7,10 @@ import { Knex } from 'knex';
 import { InactivateItem } from './InactivateItem.service';
 import { ActivateItemService } from './ActivateItem.service';
 import { GetItemService } from './GetItem.service';
+import { ItemTransactionsService } from './ItemTransactions.service';
+import { Injectable } from '@nestjs/common';
 
+@Injectable()
 export class ItemsApplicationService {
   constructor(
     private readonly createItemService: CreateItemService,
@@ -16,6 +19,7 @@ export class ItemsApplicationService {
     private readonly activateItemService: ActivateItemService,
     private readonly inactivateItemService: InactivateItem,
     private readonly getItemService: GetItemService,
+    private readonly itemTransactionsService: ItemTransactionsService,
   ) {}
 
   /**
@@ -81,4 +85,40 @@ export class ItemsApplicationService {
   async getItem(itemId: number): Promise<any> {
     return this.getItemService.getItem(itemId);
   }
+
+  /**
+   * Retrieves the item associated invoices transactions.
+   * @param {number} itemId
+   * @returns {Promise<any>}
+   */
+  async getItemInvoicesTransactions(itemId: number): Promise<any> {
+    return this.itemTransactionsService.getItemInvoicesTransactions(itemId);
+  }
+
+  /**
+   * Retrieves the item associated bills transactions.
+   * @param {number} itemId
+   * @returns {Promise<any>}
+   */
+  async getItemBillTransactions(itemId: number): Promise<any> {
+    return this.itemTransactionsService.getItemBillTransactions(itemId);
+  }
+
+  /**
+   * Retrieves the item associated estimates transactions.
+   * @param {number} itemId
+   * @returns {Promise<any>}
+   */
+  async getItemEstimatesTransactions(itemId: number): Promise<any> {
+    return this.itemTransactionsService.getItemEstimateTransactions(itemId);
+  }
+
+  /**
+   * Retrieves the item associated receipts transactions.
+   * @param {number} itemId
+   * @returns {Promise<any>}
+   */
+  async getItemReceiptsTransactions(itemId: number): Promise<any> {
+    return this.itemTransactionsService.getItemReceiptTransactions(itemId);
+  }
 }
diff --git a/packages/server-nest/src/modules/Items/ItemsEntriesService.ts b/packages/server-nest/src/modules/Items/ItemsEntriesService.ts
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/server-nest/src/modules/Items/models/Item.ts b/packages/server-nest/src/modules/Items/models/Item.ts
index 226c13dc9..045d613a7 100644
--- a/packages/server-nest/src/modules/Items/models/Item.ts
+++ b/packages/server-nest/src/modules/Items/models/Item.ts
@@ -1,11 +1,12 @@
 import * as F from 'fp-ts/function';
 import * as R from 'ramda';
 import { SearchableModel } from '@/modules/Search/SearchableMdel';
-import { TenantModel } from '@/modules/System/models/TenantModel';
+import { BaseModel } from '@/models/Model';
+// import { TenantModel } from '@/modules/System/models/TenantModel';
 
-const Extend = R.compose(SearchableModel)(TenantModel);
+// const Extend = R.compose(SearchableModel)(TenantModel);
 
-export class Item extends Extend {
+export class Item extends BaseModel {
   public readonly quantityOnHand: number;
   public readonly name: string;
   public readonly active: boolean;
diff --git a/packages/server-nest/src/modules/Items/models/ItemEntry.ts b/packages/server-nest/src/modules/Items/models/ItemEntry.ts
new file mode 100644
index 000000000..e33100dd0
--- /dev/null
+++ b/packages/server-nest/src/modules/Items/models/ItemEntry.ts
@@ -0,0 +1,231 @@
+import { Model } from 'objection';
+// import TenantModel from 'models/TenantModel';
+// import { getExlusiveTaxAmount, getInclusiveTaxAmount } from '@/utils/taxRate';
+import { BaseModel } from '@/models/Model';
+
+export class ItemEntry extends BaseModel {
+  public taxRate: number;
+  public discount: number;
+  public quantity: number;
+  public rate: number;
+  public isInclusiveTax: number;
+
+  /**
+   * Table name.
+   * @returns {string}
+   */
+  static get tableName() {
+    return 'items_entries';
+  }
+
+  /**
+   * Timestamps columns.
+   * @returns {string[]}
+   */
+  get timestamps() {
+    return ['created_at', 'updated_at'];
+  }
+
+  /**
+   * Virtual attributes.
+   * @returns {string[]}
+   */
+  static get virtualAttributes() {
+    return [
+      'amount',
+      'taxAmount',
+      'amountExludingTax',
+      'amountInclusingTax',
+      'total',
+    ];
+  }
+
+  /**
+   * Item entry total.
+   * Amount of item entry includes tax and subtracted discount amount.
+   * @returns {number}
+   */
+  get total() {
+    return this.amountInclusingTax;
+  }
+
+  /**
+   * Item entry amount.
+   * Amount of item entry that may include or exclude tax.
+   * @returns {number}
+   */
+  get amount() {
+    return this.quantity * this.rate;
+  }
+
+  /**
+   * Item entry amount including tax.
+   * @returns {number}
+   */
+  get amountInclusingTax() {
+    return this.isInclusiveTax ? this.amount : this.amount + this.taxAmount;
+  }
+
+  /**
+   * Item entry amount excluding tax.
+   * @returns {number}
+   */
+  get amountExludingTax() {
+    return this.isInclusiveTax ? this.amount - this.taxAmount : this.amount;
+  }
+
+  /**
+   * Discount amount.
+   * @returns {number}
+   */
+  get discountAmount() {
+    return this.amount * (this.discount / 100);
+  }
+
+  /**
+   * Tag rate fraction.
+   * @returns {number}
+   */
+  get tagRateFraction() {
+    return this.taxRate / 100;
+  }
+
+  /**
+   * Tax amount withheld.
+   * @returns {number}
+   */
+  get taxAmount() {
+    return 0;
+    // return this.isInclusiveTax
+    //   ? getInclusiveTaxAmount(this.amount, this.taxRate)
+    //   : getExlusiveTaxAmount(this.amount, this.taxRate);
+  }
+
+  static calcAmount(itemEntry) {
+    const { discount, quantity, rate } = itemEntry;
+    const total = quantity * rate;
+
+    return discount ? total - total * discount * 0.01 : total;
+  }
+
+  /**
+   * Item entry relations.
+   */
+  // static get relationMappings() {
+  //   const Item = require('models/Item');
+  //   const BillLandedCostEntry = require('models/BillLandedCostEntry');
+  //   const SaleInvoice = require('models/SaleInvoice');
+  //   const Bill = require('models/Bill');
+  //   const SaleReceipt = require('models/SaleReceipt');
+  //   const SaleEstimate = require('models/SaleEstimate');
+  //   const ProjectTask = require('models/Task');
+  //   const Expense = require('models/Expense');
+  //   const TaxRate = require('models/TaxRate');
+
+  //   return {
+  //     item: {
+  //       relation: Model.BelongsToOneRelation,
+  //       modelClass: Item.default,
+  //       join: {
+  //         from: 'items_entries.itemId',
+  //         to: 'items.id',
+  //       },
+  //     },
+  //     allocatedCostEntries: {
+  //       relation: Model.HasManyRelation,
+  //       modelClass: BillLandedCostEntry.default,
+  //       join: {
+  //         from: 'items_entries.referenceId',
+  //         to: 'bill_located_cost_entries.entryId',
+  //       },
+  //     },
+
+  //     invoice: {
+  //       relation: Model.BelongsToOneRelation,
+  //       modelClass: SaleInvoice.default,
+  //       join: {
+  //         from: 'items_entries.referenceId',
+  //         to: 'sales_invoices.id',
+  //       },
+  //     },
+
+  //     bill: {
+  //       relation: Model.BelongsToOneRelation,
+  //       modelClass: Bill.default,
+  //       join: {
+  //         from: 'items_entries.referenceId',
+  //         to: 'bills.id',
+  //       },
+  //     },
+
+  //     estimate: {
+  //       relation: Model.BelongsToOneRelation,
+  //       modelClass: SaleEstimate.default,
+  //       join: {
+  //         from: 'items_entries.referenceId',
+  //         to: 'sales_estimates.id',
+  //       },
+  //     },
+
+  //     /**
+  //      * Sale receipt reference.
+  //      */
+  //     receipt: {
+  //       relation: Model.BelongsToOneRelation,
+  //       modelClass: SaleReceipt.default,
+  //       join: {
+  //         from: 'items_entries.referenceId',
+  //         to: 'sales_receipts.id',
+  //       },
+  //     },
+
+  //     /**
+  //      * Project task reference.
+  //      */
+  //     projectTaskRef: {
+  //       relation: Model.HasManyRelation,
+  //       modelClass: ProjectTask.default,
+  //       join: {
+  //         from: 'items_entries.projectRefId',
+  //         to: 'tasks.id',
+  //       },
+  //     },
+
+  //     /**
+  //      * Project expense reference.
+  //      */
+  //     projectExpenseRef: {
+  //       relation: Model.HasManyRelation,
+  //       modelClass: Expense.default,
+  //       join: {
+  //         from: 'items_entries.projectRefId',
+  //         to: 'expenses_transactions.id',
+  //       },
+  //     },
+
+  //     /**
+  //      * Project bill reference.
+  //      */
+  //     projectBillRef: {
+  //       relation: Model.HasManyRelation,
+  //       modelClass: Bill.default,
+  //       join: {
+  //         from: 'items_entries.projectRefId',
+  //         to: 'bills.id',
+  //       },
+  //     },
+
+  //     /**
+  //      * Tax rate reference.
+  //      */
+  //     tax: {
+  //       relation: Model.HasOneRelation,
+  //       modelClass: TaxRate.default,
+  //       join: {
+  //         from: 'items_entries.taxRateId',
+  //         to: 'tax_rates.id',
+  //       },
+  //     },
+  //   };
+  // }
+}
diff --git a/packages/server-nest/src/modules/System/SystemModels/SystemModels.module.ts b/packages/server-nest/src/modules/System/SystemModels/SystemModels.module.ts
index 02f5742f8..aad867cd5 100644
--- a/packages/server-nest/src/modules/System/SystemModels/SystemModels.module.ts
+++ b/packages/server-nest/src/modules/System/SystemModels/SystemModels.module.ts
@@ -6,9 +6,12 @@ import { TenantModel } from '@/modules/System/models/TenantModel';
 import { SystemKnexConnection } from '../SystemDB/SystemDB.constants';
 import { SystemModelsConnection } from './SystemModels.constants';
 import { SystemUser } from '../models/SystemUser';
+import { TenantMetadata } from '../models/TenantMetadataModel';
+
+const models = [SystemUser, PlanSubscription, TenantModel, TenantMetadata];
 
-const models = [SystemUser, PlanSubscription, TenantModel];
 const modelProviders = models.map((model) => {
+  console.log(model.name, model, 'model.name');
   return {
     provide: model.name,
     useValue: model,
@@ -23,7 +26,7 @@ const providers = [
     useFactory: async (systemKnex: Knex) => {
       Model.knex(systemKnex);
     },
-  },
+  }
 ];
 
 @Global()
diff --git a/packages/server-nest/src/modules/System/models/TenantMetadataModel.ts b/packages/server-nest/src/modules/System/models/TenantMetadataModel.ts
index 190e3d29c..11f299baf 100644
--- a/packages/server-nest/src/modules/System/models/TenantMetadataModel.ts
+++ b/packages/server-nest/src/modules/System/models/TenantMetadataModel.ts
@@ -47,9 +47,7 @@ export class TenantMetadata extends BaseModel {
   /**
    * Table name.
    */
-  static get tableName() {
-    return 'tenants_metadata';
-  }
+  static tableName = 'tenants_metadata';
 
   /**
    * Virtual attributes.
diff --git a/packages/server-nest/src/modules/System/models/TenantModel.ts b/packages/server-nest/src/modules/System/models/TenantModel.ts
index 5483b01f1..2b89bff2c 100644
--- a/packages/server-nest/src/modules/System/models/TenantModel.ts
+++ b/packages/server-nest/src/modules/System/models/TenantModel.ts
@@ -2,20 +2,19 @@ import { BaseModel } from '@/models/Model';
 import { Model } from 'objection';
 import { TenantMetadata } from './TenantMetadataModel';
 
+
 export class TenantModel extends BaseModel {
   public readonly organizationId: string;
   public readonly initializedAt: string;
   public readonly seededAt: boolean;
   public readonly builtAt: string;
-  public readonly metadata: TenantMetadata;
+  public readonly metadata: any;
 
   /**
    * Table name.
    */
-  static get tableName() {
-    return 'tenants';
-  }
-
+  static tableName = 'tenants';
+  
   /**
    * Relations mappings.
    */
diff --git a/packages/server-nest/src/modules/Tenancy/TenancyContext.service.ts b/packages/server-nest/src/modules/Tenancy/TenancyContext.service.ts
index f2890b6b8..f80ca7503 100644
--- a/packages/server-nest/src/modules/Tenancy/TenancyContext.service.ts
+++ b/packages/server-nest/src/modules/Tenancy/TenancyContext.service.ts
@@ -36,8 +36,8 @@ export class TenancyContext {
   }
 
   /**
-   *
-   * @returns
+   * Retrieves the current system user.
+   * @returns {Promise<SystemUser>}
    */
   getSystemUser() {
     // Get the user from the request headers.
diff --git a/packages/server-nest/src/modules/Tenancy/TenancyModels/Tenancy.module.ts b/packages/server-nest/src/modules/Tenancy/TenancyModels/Tenancy.module.ts
index 97711d63b..2647d154e 100644
--- a/packages/server-nest/src/modules/Tenancy/TenancyModels/Tenancy.module.ts
+++ b/packages/server-nest/src/modules/Tenancy/TenancyModels/Tenancy.module.ts
@@ -4,10 +4,9 @@ import { TENANCY_DB_CONNECTION } from '../TenancyDB/TenancyDB.constants';
 
 import { Item } from '../../../modules/Items/models/Item';
 import { Account } from '@/modules/Accounts/models/Account';
-import { TenantModel } from '@/modules/System/models/TenantModel';
-import { TenantMetadata } from '@/modules/System/models/TenantMetadataModel';
+import { ItemEntry } from '@/modules/Items/models/ItemEntry';
 
-const models = [Item, Account, TenantModel, TenantMetadata];
+const models = [Item, Account, ItemEntry];
 
 const modelProviders = models.map((model) => {
   return {
diff --git a/packages/server-nest/src/modules/Transformer/Transformer.module.ts b/packages/server-nest/src/modules/Transformer/Transformer.module.ts
new file mode 100644
index 000000000..457c7d5f0
--- /dev/null
+++ b/packages/server-nest/src/modules/Transformer/Transformer.module.ts
@@ -0,0 +1,11 @@
+import { Global, Module } from '@nestjs/common';
+import { TransformerInjectable } from './TransformerInjectable.service';
+import { TenancyContext } from '../Tenancy/TenancyContext.service';
+
+@Global()
+@Module({
+  providers: [TransformerInjectable],
+  exports: [TransformerInjectable],
+  imports: [TenancyContext],
+})
+export class TransformerModule {}
diff --git a/packages/server-nest/src/modules/Transformer/TransformerInjectable.service.ts b/packages/server-nest/src/modules/Transformer/TransformerInjectable.service.ts
index 2fa649dbc..3975818f5 100644
--- a/packages/server-nest/src/modules/Transformer/TransformerInjectable.service.ts
+++ b/packages/server-nest/src/modules/Transformer/TransformerInjectable.service.ts
@@ -1,6 +1,6 @@
 import { I18nService } from 'nestjs-i18n';
 import { Transformer } from './Transformer';
-import { Injectable } from '@nestjs/common';
+import { Global, Injectable } from '@nestjs/common';
 import { TenancyContext } from '../Tenancy/TenancyContext.service';
 import { TransformerContext } from './Transformer.types';