diff --git a/packages/server/src/interfaces/Bill.ts b/packages/server/src/interfaces/Bill.ts
index fcf89dbda..fa94c3e41 100644
--- a/packages/server/src/interfaces/Bill.ts
+++ b/packages/server/src/interfaces/Bill.ts
@@ -1,7 +1,7 @@
 import { Knex } from 'knex';
 import { IDynamicListFilterDTO } from './DynamicFilter';
 import { IItemEntry, IItemEntryDTO } from './ItemEntry';
-import { IBillLandedCost } from './LandedCost'; 
+import { IBillLandedCost } from './LandedCost';
 export interface IBillDTO {
   vendorId: number;
   billNumber: string;
@@ -99,17 +99,17 @@ export interface IBillCreatedPayload {
   trx: Knex.Transaction;
 }
 
-export interface IBillCreatingPayload{
+export interface IBillCreatingPayload {
   tenantId: number;
   billDTO: IBillDTO;
-  trx: Knex.Transaction; 
+  trx: Knex.Transaction;
 }
 
 export interface IBillEditingPayload {
   tenantId: number;
   oldBill: IBill;
   billDTO: IBillEditDTO;
-  trx: Knex.Transaction; 
+  trx: Knex.Transaction;
 }
 export interface IBillEditedPayload {
   tenantId: number;
@@ -129,7 +129,7 @@ export interface IBIllEventDeletedPayload {
 export interface IBillEventDeletingPayload {
   tenantId: number;
   oldBill: IBill;
-  trx: Knex.Transaction; 
+  trx: Knex.Transaction;
 }
 export enum BillAction {
   Create = 'Create',
@@ -138,3 +138,16 @@ export enum BillAction {
   View = 'View',
   NotifyBySms = 'NotifyBySms',
 }
+
+export interface IBillOpeningPayload {
+  trx: Knex.Transaction;
+  tenantId: number;
+  oldBill: IBill;
+}
+
+export interface IBillOpenedPayload {
+  trx: Knex.Transaction;
+  bill: IBill;
+  oldBill: IBill;
+  tenantId: number;
+}
diff --git a/packages/server/src/interfaces/PaymentReceive.ts b/packages/server/src/interfaces/PaymentReceive.ts
index 658113fb3..6f8d8552a 100644
--- a/packages/server/src/interfaces/PaymentReceive.ts
+++ b/packages/server/src/interfaces/PaymentReceive.ts
@@ -1,6 +1,5 @@
-import { ISystemUser } from '@/interfaces';
 import { Knex } from 'knex';
-import { pick } from 'lodash';
+import { ISystemUser } from '@/interfaces';
 import { ILedgerEntry } from './Ledger';
 import { ISaleInvoice } from './SaleInvoice';
 
diff --git a/packages/server/src/interfaces/SaleInvoice.ts b/packages/server/src/interfaces/SaleInvoice.ts
index 5dc91b062..4351f90f4 100644
--- a/packages/server/src/interfaces/SaleInvoice.ts
+++ b/packages/server/src/interfaces/SaleInvoice.ts
@@ -156,6 +156,7 @@ export interface ISaleInvoiceEventDeliveredPayload {
   tenantId: number;
   saleInvoiceId: number;
   saleInvoice: ISaleInvoice;
+  trx: Knex.Transaction;
 }
 
 export interface ISaleInvoiceDeliveringPayload {
diff --git a/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts b/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts
index c38e65cb7..ea7ed5ab4 100644
--- a/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts
+++ b/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts
@@ -20,6 +20,10 @@ export class BillGLEntriesSubscriber {
       events.bill.onCreated,
       this.handlerWriteJournalEntriesOnCreate
     );
+    bus.subscribe(
+      events.bill.onOpened,
+      this.handlerWriteJournalEntriesOnCreate
+    );
     bus.subscribe(
       events.bill.onEdited,
       this.handleOverwriteJournalEntriesOnEdit
@@ -34,8 +38,11 @@ export class BillGLEntriesSubscriber {
   private handlerWriteJournalEntriesOnCreate = async ({
     tenantId,
     billId,
+    bill,
     trx,
   }: IBillCreatedPayload) => {
+    if (!bill.openedAt) return null;
+
     await this.billGLEntries.writeBillGLEntries(tenantId, billId, trx);
   };
 
@@ -46,8 +53,11 @@ export class BillGLEntriesSubscriber {
   private handleOverwriteJournalEntriesOnEdit = async ({
     tenantId,
     billId,
+    bill,
     trx,
   }: IBillEditedPayload) => {
+    if (!bill.openedAt) return null;
+
     await this.billGLEntries.rewriteBillGLEntries(tenantId, billId, trx);
   };
 
diff --git a/packages/server/src/services/Purchases/Bills/EditBill.ts b/packages/server/src/services/Purchases/Bills/EditBill.ts
index a7259c730..26121c120 100644
--- a/packages/server/src/services/Purchases/Bills/EditBill.ts
+++ b/packages/server/src/services/Purchases/Bills/EditBill.ts
@@ -132,7 +132,7 @@ export class EditBill {
       } as IBillEditingPayload);
 
       // Update the bill transaction.
-      const bill = await Bill.query(trx).upsertGraph({
+      const bill = await Bill.query(trx).upsertGraphAndFetch({
         id: billId,
         ...billObj,
       });
diff --git a/packages/server/src/services/Purchases/Bills/OpenBill.ts b/packages/server/src/services/Purchases/Bills/OpenBill.ts
index a2c2039b3..bcd1e397e 100644
--- a/packages/server/src/services/Purchases/Bills/OpenBill.ts
+++ b/packages/server/src/services/Purchases/Bills/OpenBill.ts
@@ -5,6 +5,9 @@ import { ERRORS } from './constants';
 import HasTenancyService from '@/services/Tenancy/TenancyService';
 import UnitOfWork from '@/services/UnitOfWork';
 import { BillsValidators } from './BillsValidators';
+import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+import events from '@/subscribers/events';
+import { IBillOpenedPayload, IBillOpeningPayload } from '@/interfaces';
 
 @Service()
 export class OpenBill {
@@ -17,6 +20,9 @@ export class OpenBill {
   @Inject()
   private validators: BillsValidators;
 
+  @Inject()
+  private eventPublisher: EventPublisher;
+
   /**
    * Mark the bill as open.
    * @param {number} tenantId
@@ -37,10 +43,24 @@ export class OpenBill {
       throw new ServiceError(ERRORS.BILL_ALREADY_OPEN);
     }
     return this.uow.withTransaction(tenantId, async (trx) => {
+      // Triggers `onBillCreating` event.
+      await this.eventPublisher.emitAsync(events.bill.onOpening, {
+        trx,
+        tenantId,
+        oldBill,
+      } as IBillOpeningPayload);
+
       // Record the bill opened at on the storage.
-      await Bill.query(trx).findById(billId).patch({
+      const bill = await Bill.query(trx).patchAndFetchById(billId, {
         openedAt: moment().toMySqlDateTime(),
       });
+      // Triggers `onBillCreating` event.
+      await this.eventPublisher.emitAsync(events.bill.onOpened, {
+        trx,
+        bill,
+        oldBill,
+        tenantId,
+      } as IBillOpenedPayload);
     });
   }
 }
diff --git a/packages/server/src/services/Sales/Invoices/DeliverSaleInvoice.ts b/packages/server/src/services/Sales/Invoices/DeliverSaleInvoice.ts
index 77511af84..30ba635a6 100644
--- a/packages/server/src/services/Sales/Invoices/DeliverSaleInvoice.ts
+++ b/packages/server/src/services/Sales/Invoices/DeliverSaleInvoice.ts
@@ -63,14 +63,17 @@ export class DeliverSaleInvoice {
 
       // Record the delivered at on the storage.
       const saleInvoice = await SaleInvoice.query(trx)
-        .where({ id: saleInvoiceId })
-        .update({ deliveredAt: moment().toMySqlDateTime() });
+        .patchAndFetchById(saleInvoiceId, {
+          deliveredAt: moment().toMySqlDateTime(),
+        })
+        .withGraphFetched('entries');
 
       // Triggers `onSaleInvoiceDelivered` event.
       await this.eventPublisher.emitAsync(events.saleInvoice.onDelivered, {
         tenantId,
         saleInvoiceId,
         saleInvoice,
+        trx,
       } as ISaleInvoiceEventDeliveredPayload);
     });
   }
diff --git a/packages/server/src/services/Sales/Receipts/CloseSaleReceipt.ts b/packages/server/src/services/Sales/Receipts/CloseSaleReceipt.ts
index 0566d4733..b678884e3 100644
--- a/packages/server/src/services/Sales/Receipts/CloseSaleReceipt.ts
+++ b/packages/server/src/services/Sales/Receipts/CloseSaleReceipt.ts
@@ -58,12 +58,12 @@ export class CloseSaleReceipt {
       } as ISaleReceiptEventClosingPayload);
 
       // Mark the sale receipt as closed on the storage.
-      const saleReceipt = await SaleReceipt.query(trx)
-        .findById(saleReceiptId)
-        .patch({
+      const saleReceipt = await SaleReceipt.query(trx).patchAndFetchById(
+        saleReceiptId,
+        {
           closedAt: moment().toMySqlDateTime(),
-        });
-
+        }
+      );
       // Triggers `onSaleReceiptClosed` event.
       await this.eventPublisher.emitAsync(events.saleReceipt.onClosed, {
         saleReceiptId,
diff --git a/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts b/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts
index ee04c98a1..04f6039d6 100644
--- a/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts
+++ b/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts
@@ -36,8 +36,12 @@ export default class BillWriteInventoryTransactionsSubscriber {
   private handleWritingInventoryTransactions = async ({
     tenantId,
     billId,
+    bill,
     trx,
   }: IBillCreatedPayload) => {
+    // Can't continue if the bill is not opened yet.
+    if (!bill.openedAt) return null;
+
     await this.billsInventory.recordInventoryTransactions(
       tenantId,
       billId,
@@ -52,8 +56,12 @@ export default class BillWriteInventoryTransactionsSubscriber {
   private handleOverwritingInventoryTransactions = async ({
     tenantId,
     billId,
+    bill,
     trx,
   }: IBillEditedPayload) => {
+    // Can't continue if the bill is not opened yet.
+    if (!bill.openedAt) return null;
+
     await this.billsInventory.recordInventoryTransactions(
       tenantId,
       billId,
diff --git a/packages/server/src/subscribers/Bills/WriteJournalEntries.ts b/packages/server/src/subscribers/Bills/WriteJournalEntries.ts
index bb9589f54..23f68c6ad 100644
--- a/packages/server/src/subscribers/Bills/WriteJournalEntries.ts
+++ b/packages/server/src/subscribers/Bills/WriteJournalEntries.ts
@@ -38,8 +38,12 @@ export default class BillWriteGLEntriesSubscriber {
   private handlerWriteJournalEntriesOnCreate = async ({
     tenantId,
     billId,
+    bill,
     trx,
   }: IBillCreatedPayload) => {
+    // Can't continue if the bill is not opened yet.
+    if (!bill.openedAt) return null;
+
     await this.billsService.recordJournalTransactions(
       tenantId,
       billId,
@@ -55,8 +59,12 @@ export default class BillWriteGLEntriesSubscriber {
   private handleOverwriteJournalEntriesOnEdit = async ({
     tenantId,
     billId,
+    bill,
     trx,
   }: IBillEditedPayload) => {
+    // Can't continue if the bill is not opened yet.
+    if (!bill.openedAt) return null;
+
     await this.billsService.recordJournalTransactions(
       tenantId,
       billId,
diff --git a/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts b/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts
index bffe4260f..d9ae3b643 100644
--- a/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts
+++ b/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts
@@ -36,8 +36,10 @@ export default class PaymentReceivesWriteGLEntriesSubscriber {
   private handleWriteJournalEntriesOnceCreated = async ({
     tenantId,
     paymentReceiveId,
+    paymentReceive,
     trx,
   }: IPaymentReceiveCreatedPayload) => {
+    if (paymentReceive)
     await this.paymentReceiveGLEntries.writePaymentGLEntries(
       tenantId,
       paymentReceiveId,
diff --git a/packages/server/src/subscribers/SaleInvoices/WriteInventoryTransactions.ts b/packages/server/src/subscribers/SaleInvoices/WriteInventoryTransactions.ts
index b4f620b20..ec3d920a5 100644
--- a/packages/server/src/subscribers/SaleInvoices/WriteInventoryTransactions.ts
+++ b/packages/server/src/subscribers/SaleInvoices/WriteInventoryTransactions.ts
@@ -4,6 +4,7 @@ import {
   ISaleInvoiceCreatedPayload,
   ISaleInvoiceDeletedPayload,
   ISaleInvoiceEditedPayload,
+  ISaleInvoiceEventDeliveredPayload,
 } from '@/interfaces';
 import { InvoiceInventoryTransactions } from '@/services/Sales/Invoices/InvoiceInventoryTransactions';
 
@@ -20,6 +21,10 @@ export default class WriteInventoryTransactions {
       events.saleInvoice.onCreated,
       this.handleWritingInventoryTransactions
     );
+    bus.subscribe(
+      events.saleInvoice.onDelivered,
+      this.handleWritingInventoryTransactions
+    );
     bus.subscribe(
       events.saleInvoice.onEdited,
       this.handleRewritingInventoryTransactions
@@ -38,7 +43,10 @@ export default class WriteInventoryTransactions {
     tenantId,
     saleInvoice,
     trx,
-  }: ISaleInvoiceCreatedPayload) => {
+  }: ISaleInvoiceCreatedPayload | ISaleInvoiceEventDeliveredPayload) => {
+    // Can't continue if the sale invoice is not delivered yet.
+    if (!saleInvoice.deliveredAt) return null;
+
     await this.saleInvoiceInventory.recordInventoryTranscactions(
       tenantId,
       saleInvoice,
diff --git a/packages/server/src/subscribers/SaleInvoices/WriteJournalEntries.ts b/packages/server/src/subscribers/SaleInvoices/WriteJournalEntries.ts
index fc5d9411b..15ba5562b 100644
--- a/packages/server/src/subscribers/SaleInvoices/WriteJournalEntries.ts
+++ b/packages/server/src/subscribers/SaleInvoices/WriteJournalEntries.ts
@@ -15,11 +15,15 @@ export default class SaleInvoiceWriteGLEntriesSubscriber {
   /**
    * Constructor method.
    */
-  attach(bus) {
+  public attach(bus) {
     bus.subscribe(
       events.saleInvoice.onCreated,
       this.handleWriteJournalEntriesOnInvoiceCreated
     );
+    bus.subscribe(
+      events.saleInvoice.onDelivered,
+      this.handleWriteJournalEntriesOnInvoiceCreated
+    );
     bus.subscribe(
       events.saleInvoice.onEdited,
       this.handleRewriteJournalEntriesOnceInvoiceEdit
@@ -36,8 +40,12 @@ export default class SaleInvoiceWriteGLEntriesSubscriber {
   private handleWriteJournalEntriesOnInvoiceCreated = async ({
     tenantId,
     saleInvoiceId,
+    saleInvoice,
     trx,
   }: ISaleInvoiceCreatedPayload) => {
+    // Can't continue if the sale invoice is not delivered yet.
+    if (!saleInvoice.deliveredAt) return null;
+
     await this.saleInvoiceGLEntries.writeInvoiceGLEntries(
       tenantId,
       saleInvoiceId,
@@ -53,6 +61,9 @@ export default class SaleInvoiceWriteGLEntriesSubscriber {
     saleInvoice,
     trx,
   }: ISaleInvoiceEditedPayload) => {
+    // Can't continue if the sale invoice is not delivered yet.
+    if (!saleInvoice.deliveredAt) return null;
+
     await this.saleInvoiceGLEntries.rewritesInvoiceGLEntries(
       tenantId,
       saleInvoice.id,
diff --git a/packages/server/src/subscribers/SaleReceipt/WriteInventoryTransactions.ts b/packages/server/src/subscribers/SaleReceipt/WriteInventoryTransactions.ts
index 57da23747..bf4fd007a 100644
--- a/packages/server/src/subscribers/SaleReceipt/WriteInventoryTransactions.ts
+++ b/packages/server/src/subscribers/SaleReceipt/WriteInventoryTransactions.ts
@@ -40,6 +40,9 @@ export default class SaleReceiptInventoryTransactionsSubscriber {
     saleReceipt,
     trx,
   }: ISaleReceiptCreatedPayload) => {
+    // Can't continue if the sale receipt is not closed yet.
+    if (!saleReceipt.closedAt) return null;
+
     await this.saleReceiptInventory.recordInventoryTransactions(
       tenantId,
       saleReceipt,
@@ -57,6 +60,9 @@ export default class SaleReceiptInventoryTransactionsSubscriber {
     saleReceipt,
     trx,
   }: ISaleReceiptEditedPayload) => {
+    // Can't continue if the sale receipt is not closed yet.
+    if (!saleReceipt.closedAt) return null;
+
     await this.saleReceiptInventory.recordInventoryTransactions(
       tenantId,
       saleReceipt,
diff --git a/packages/server/src/subscribers/SaleReceipt/WriteJournalEntries.ts b/packages/server/src/subscribers/SaleReceipt/WriteJournalEntries.ts
index 8a14bfcad..32c9c363b 100644
--- a/packages/server/src/subscribers/SaleReceipt/WriteJournalEntries.ts
+++ b/packages/server/src/subscribers/SaleReceipt/WriteJournalEntries.ts
@@ -21,6 +21,10 @@ export default class SaleReceiptWriteGLEntriesSubscriber {
       events.saleReceipt.onCreated,
       this.handleWriteReceiptIncomeJournalEntrieOnCreate
     );
+    bus.subscribe(
+      events.saleReceipt.onClosed,
+      this.handleWriteReceiptIncomeJournalEntrieOnCreate
+    );
     bus.subscribe(
       events.saleReceipt.onEdited,
       this.handleWriteReceiptIncomeJournalEntrieOnEdited
@@ -38,8 +42,12 @@ export default class SaleReceiptWriteGLEntriesSubscriber {
   public handleWriteReceiptIncomeJournalEntrieOnCreate = async ({
     tenantId,
     saleReceiptId,
+    saleReceipt,
     trx,
   }: ISaleReceiptCreatedPayload) => {
+    // Can't continue if the sale receipt is not closed yet.
+    if (!saleReceipt.closedAt) return null;
+
     // Writes the sale receipt income journal entries.
     await this.saleReceiptGLEntries.writeIncomeGLEntries(
       tenantId,
@@ -71,8 +79,12 @@ export default class SaleReceiptWriteGLEntriesSubscriber {
   private handleWriteReceiptIncomeJournalEntrieOnEdited = async ({
     tenantId,
     saleReceiptId,
+    saleReceipt,
     trx,
   }: ISaleReceiptEditedPayload) => {
+    // Can't continue if the sale receipt is not closed yet.
+    if (!saleReceipt.closedAt) return null;
+
     // Writes the sale receipt income journal entries.
     await this.saleReceiptGLEntries.rewriteReceiptGLEntries(
       tenantId,
diff --git a/packages/server/src/subscribers/events.ts b/packages/server/src/subscribers/events.ts
index 19416b65d..f43366107 100644
--- a/packages/server/src/subscribers/events.ts
+++ b/packages/server/src/subscribers/events.ts
@@ -220,6 +220,9 @@ export default {
 
     onPublishing: 'onBillPublishing',
     onPublished: 'onBillPublished',
+
+    onOpening: 'onBillOpening',
+    onOpened: 'onBillOpened',
   },
 
   /**