diff --git a/packages/server/src/services/CreditNotes/CreateCreditNote.ts b/packages/server/src/services/CreditNotes/CreateCreditNote.ts
index 2c4c0d58f..641d1034e 100644
--- a/packages/server/src/services/CreditNotes/CreateCreditNote.ts
+++ b/packages/server/src/services/CreditNotes/CreateCreditNote.ts
@@ -16,16 +16,16 @@ import BaseCreditNotes from './CreditNotes';
 @Service()
 export default class CreateCreditNote extends BaseCreditNotes {
   @Inject()
-  uow: UnitOfWork;
+  private uow: UnitOfWork;
 
   @Inject()
-  itemsEntriesService: ItemsEntriesService;
+  private itemsEntriesService: ItemsEntriesService;
 
   @Inject()
-  tenancy: HasTenancyService;
+  private tenancy: HasTenancyService;
 
   @Inject()
-  eventPublisher: EventPublisher;
+  private eventPublisher: EventPublisher;
 
   /**
    * Creates a new credit note.
diff --git a/packages/server/src/services/CreditNotes/CreditNoteApplySyncInvoicesSubscriber.ts b/packages/server/src/services/CreditNotes/CreditNoteApplySyncInvoicesSubscriber.ts
index 3a4e7f59b..f22a6c03e 100644
--- a/packages/server/src/services/CreditNotes/CreditNoteApplySyncInvoicesSubscriber.ts
+++ b/packages/server/src/services/CreditNotes/CreditNoteApplySyncInvoicesSubscriber.ts
@@ -1,5 +1,4 @@
 import { Service, Inject } from 'typedi';
-import HasTenancyService from '@/services/Tenancy/TenancyService';
 import events from '@/subscribers/events';
 import {
   IApplyCreditToInvoicesCreatedPayload,
@@ -10,15 +9,12 @@ import CreditNoteApplySyncInvoicesCreditedAmount from './CreditNoteApplySyncInvo
 @Service()
 export default class CreditNoteApplySyncInvoicesCreditedAmountSubscriber {
   @Inject()
-  tenancy: HasTenancyService;
-
-  @Inject()
-  syncInvoicesWithCreditNote: CreditNoteApplySyncInvoicesCreditedAmount;
+  private syncInvoicesWithCreditNote: CreditNoteApplySyncInvoicesCreditedAmount;
 
   /**
    * Attaches events with handlers.
    */
-  attach(bus) {
+  public attach(bus) {
     bus.subscribe(
       events.creditNote.onApplyToInvoicesCreated,
       this.incrementAppliedInvoicesOnceCreditCreated
diff --git a/packages/server/src/services/CreditNotes/CreditNoteInventoryTransactionsSubscriber.ts b/packages/server/src/services/CreditNotes/CreditNoteInventoryTransactionsSubscriber.ts
index 7b23d079d..54b702bea 100644
--- a/packages/server/src/services/CreditNotes/CreditNoteInventoryTransactionsSubscriber.ts
+++ b/packages/server/src/services/CreditNotes/CreditNoteInventoryTransactionsSubscriber.ts
@@ -15,7 +15,7 @@ export default class CreditNoteInventoryTransactionsSubscriber {
   /**
    * Attaches events with publisher.
    */
-  attach(bus) {
+  public attach(bus) {
     bus.subscribe(
       events.creditNote.onCreated,
       this.writeInventoryTranscationsOnceCreated
@@ -37,6 +37,7 @@ export default class CreditNoteInventoryTransactionsSubscriber {
   /**
    * Writes inventory transactions once credit note created.
    * @param {ICreditNoteCreatedPayload} payload -
+   * @returns {Promise<void>}
    */
   public writeInventoryTranscationsOnceCreated = async ({
     tenantId,
@@ -44,9 +45,8 @@ export default class CreditNoteInventoryTransactionsSubscriber {
     trx,
   }: ICreditNoteCreatedPayload) => {
     // Can't continue if the credit note is open yet.
-    if (!creditNote.isOpen) {
-      return;
-    }
+    if (!creditNote.isOpen) return;
+
     await this.inventoryTransactions.createInventoryTransactions(
       tenantId,
       creditNote,
@@ -57,6 +57,7 @@ export default class CreditNoteInventoryTransactionsSubscriber {
   /**
    * Rewrites inventory transactions once credit note edited.
    * @param {ICreditNoteEditedPayload} payload -
+   * @returns {Promise<void>}
    */
   public rewriteInventoryTransactionsOnceEdited = async ({
     tenantId,
@@ -65,9 +66,8 @@ export default class CreditNoteInventoryTransactionsSubscriber {
     trx,
   }: ICreditNoteEditedPayload) => {
     // Can't continue if the credit note is open yet.
-    if (!creditNote.isOpen) {
-      return;
-    }
+    if (!creditNote.isOpen) return;
+
     await this.inventoryTransactions.editInventoryTransactions(
       tenantId,
       creditNoteId,
@@ -87,9 +87,8 @@ export default class CreditNoteInventoryTransactionsSubscriber {
     trx,
   }: ICreditNoteDeletedPayload) => {
     // Can't continue if the credit note is open yet.
-    if (!oldCreditNote.isOpen) {
-      return;
-    }
+    if (!oldCreditNote.isOpen) return;
+
     await this.inventoryTransactions.deleteInventoryTransactions(
       tenantId,
       creditNoteId,
diff --git a/packages/server/src/services/Expenses/ExpenseGLEntriesSubscriber.ts b/packages/server/src/services/Expenses/ExpenseGLEntriesSubscriber.ts
index 56d37a7db..1a177876e 100644
--- a/packages/server/src/services/Expenses/ExpenseGLEntriesSubscriber.ts
+++ b/packages/server/src/services/Expenses/ExpenseGLEntriesSubscriber.ts
@@ -21,7 +21,7 @@ export class ExpensesWriteGLSubscriber {
    * Attaches events with handlers.
    * @param bus
    */
-  attach(bus) {
+  public attach(bus) {
     bus.subscribe(
       events.expenses.onCreated,
       this.handleWriteGLEntriesOnceCreated
diff --git a/packages/server/src/services/ManualJournals/ManualJournalGLEntriesSubscriber.ts b/packages/server/src/services/ManualJournals/ManualJournalGLEntriesSubscriber.ts
index c5efa8f12..21f921d22 100644
--- a/packages/server/src/services/ManualJournals/ManualJournalGLEntriesSubscriber.ts
+++ b/packages/server/src/services/ManualJournals/ManualJournalGLEntriesSubscriber.ts
@@ -48,6 +48,7 @@ export class ManualJournalWriteGLSubscriber {
   /**
    * Handle manual journal created event.
    * @param {IManualJournalEventCreatedPayload} payload -
+   * @returns {Promise<void>}
    */
   private handleWriteJournalEntriesOnCreated = async ({
     tenantId,
@@ -55,18 +56,19 @@ export class ManualJournalWriteGLSubscriber {
     trx,
   }: IManualJournalEventCreatedPayload) => {
     // Ingore writing manual journal journal entries in case was not published.
-    if (manualJournal.publishedAt) {
-      await this.manualJournalGLEntries.createManualJournalGLEntries(
-        tenantId,
-        manualJournal.id,
-        trx
-      );
-    }
+    if (!manualJournal.publishedAt) return;
+
+    await this.manualJournalGLEntries.createManualJournalGLEntries(
+      tenantId,
+      manualJournal.id,
+      trx
+    );
   };
 
   /**
    * Handles the manual journal next number increment once the journal be created.
    * @param {IManualJournalEventCreatedPayload} payload -
+   * @return {Promise<void>}
    */
   private handleJournalNumberIncrement = async ({
     tenantId,
@@ -77,6 +79,7 @@ export class ManualJournalWriteGLSubscriber {
   /**
    * Handle manual journal edited event.
    * @param {IManualJournalEventEditedPayload}
+   * @return {Promise<void>}
    */
   private handleRewriteJournalEntriesOnEdited = async ({
     tenantId,
@@ -96,6 +99,7 @@ export class ManualJournalWriteGLSubscriber {
   /**
    * Handles writing journal entries once the manula journal publish.
    * @param {IManualJournalEventPublishedPayload} payload -
+   * @return {Promise<void>}
    */
   private handleWriteJournalEntriesOnPublished = async ({
     tenantId,
diff --git a/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts b/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts
index ea7ed5ab4..9b31cf463 100644
--- a/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts
+++ b/packages/server/src/services/Purchases/Bills/BillGLEntriesSubscriber.ts
@@ -4,6 +4,7 @@ import {
   IBillCreatedPayload,
   IBillEditedPayload,
   IBIllEventDeletedPayload,
+  IBillOpenedPayload,
 } from '@/interfaces';
 import { BillGLEntries } from './BillGLEntries';
 
@@ -37,13 +38,12 @@ export class BillGLEntriesSubscriber {
    */
   private handlerWriteJournalEntriesOnCreate = async ({
     tenantId,
-    billId,
     bill,
     trx,
-  }: IBillCreatedPayload) => {
+  }: IBillCreatedPayload | IBillOpenedPayload) => {
     if (!bill.openedAt) return null;
 
-    await this.billGLEntries.writeBillGLEntries(tenantId, billId, trx);
+    await this.billGLEntries.writeBillGLEntries(tenantId, bill.id, trx);
   };
 
   /**
diff --git a/packages/server/src/services/Purchases/Bills/OpenBill.ts b/packages/server/src/services/Purchases/Bills/OpenBill.ts
index bcd1e397e..25a0da22e 100644
--- a/packages/server/src/services/Purchases/Bills/OpenBill.ts
+++ b/packages/server/src/services/Purchases/Bills/OpenBill.ts
@@ -50,10 +50,13 @@ export class OpenBill {
         oldBill,
       } as IBillOpeningPayload);
 
-      // Record the bill opened at on the storage.
-      const bill = await Bill.query(trx).patchAndFetchById(billId, {
-        openedAt: moment().toMySqlDateTime(),
-      });
+      // Save the bill opened at on the storage.
+      const bill = await Bill.query(trx)
+        .patchAndFetchById(billId, {
+          openedAt: moment().toMySqlDateTime(),
+        })
+        .withGraphFetched('entries');
+
       // Triggers `onBillCreating` event.
       await this.eventPublisher.emitAsync(events.bill.onOpened, {
         trx,
diff --git a/packages/server/src/services/Purchases/VendorCredits/VendorCreditInventoryTransactionsSusbcriber.ts b/packages/server/src/services/Purchases/VendorCredits/VendorCreditInventoryTransactionsSusbcriber.ts
index c9b24a4f7..bae3adc23 100644
--- a/packages/server/src/services/Purchases/VendorCredits/VendorCreditInventoryTransactionsSusbcriber.ts
+++ b/packages/server/src/services/Purchases/VendorCredits/VendorCreditInventoryTransactionsSusbcriber.ts
@@ -10,7 +10,7 @@ import VendorCreditInventoryTransactions from './VendorCreditInventoryTransactio
 @Service()
 export default class VendorCreditInventoryTransactionsSubscriber {
   @Inject()
-  inventoryTransactions: VendorCreditInventoryTransactions;
+  private inventoryTransactions: VendorCreditInventoryTransactions;
 
   /**
    * Attaches events with handlers.
@@ -21,6 +21,10 @@ export default class VendorCreditInventoryTransactionsSubscriber {
       events.vendorCredit.onCreated,
       this.writeInventoryTransactionsOnceCreated
     );
+    bus.subscribe(
+      events.vendorCredit.onOpened,
+      this.writeInventoryTransactionsOnceCreated
+    );
     bus.subscribe(
       events.vendorCredit.onEdited,
       this.rewriteInventroyTransactionsOnceEdited
@@ -40,6 +44,9 @@ export default class VendorCreditInventoryTransactionsSubscriber {
     vendorCredit,
     trx,
   }: IVendorCreditCreatedPayload) => {
+    // Can't continue if vendor credit is not opened.
+    if (!vendorCredit.openedAt) return null;
+
     await this.inventoryTransactions.createInventoryTransactions(
       tenantId,
       vendorCredit,
@@ -57,6 +64,9 @@ export default class VendorCreditInventoryTransactionsSubscriber {
     vendorCredit,
     trx,
   }: IVendorCreditEditedPayload) => {
+    // Can't continue if vendor credit is not opened.
+    if (!vendorCredit.openedAt) return null;
+
     await this.inventoryTransactions.editInventoryTransactions(
       tenantId,
       vendorCreditId,
diff --git a/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts b/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts
index 04f6039d6..6af4e8551 100644
--- a/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts
+++ b/packages/server/src/subscribers/Bills/WriteInventoryTransactions.ts
@@ -4,6 +4,7 @@ import {
   IBillCreatedPayload,
   IBillEditedPayload,
   IBIllEventDeletedPayload,
+  IBillOpenedPayload,
 } from '@/interfaces';
 import { BillInventoryTransactions } from '@/services/Purchases/Bills/BillInventoryTransactions';
 
@@ -20,6 +21,10 @@ export default class BillWriteInventoryTransactionsSubscriber {
       events.bill.onCreated,
       this.handleWritingInventoryTransactions
     );
+    bus.subscribe(
+      events.bill.onOpened,
+      this.handleWritingInventoryTransactions
+    );
     bus.subscribe(
       events.bill.onEdited,
       this.handleOverwritingInventoryTransactions
@@ -32,19 +37,19 @@ export default class BillWriteInventoryTransactionsSubscriber {
 
   /**
    * Handles writing the inventory transactions once bill created.
+   * @param {IBillCreatedPayload | IBillOpenedPayload} payload -
    */
   private handleWritingInventoryTransactions = async ({
     tenantId,
-    billId,
     bill,
     trx,
-  }: IBillCreatedPayload) => {
+  }: IBillCreatedPayload | IBillOpenedPayload) => {
     // Can't continue if the bill is not opened yet.
     if (!bill.openedAt) return null;
 
     await this.billsInventory.recordInventoryTransactions(
       tenantId,
-      billId,
+      bill.id,
       false,
       trx
     );
@@ -52,6 +57,7 @@ export default class BillWriteInventoryTransactionsSubscriber {
 
   /**
    * Handles the overwriting the inventory transactions once bill edited.
+   * @param {IBillEditedPayload} payload -
    */
   private handleOverwritingInventoryTransactions = async ({
     tenantId,
@@ -72,6 +78,7 @@ export default class BillWriteInventoryTransactionsSubscriber {
 
   /**
    * Handles the reverting the inventory transactions once the bill deleted.
+   * @param {IBIllEventDeletedPayload} payload -
    */
   private handleRevertInventoryTransactions = async ({
     tenantId,
diff --git a/packages/server/src/subscribers/Bills/WriteJournalEntries.ts b/packages/server/src/subscribers/Bills/WriteJournalEntries.ts
index 23f68c6ad..f30694753 100644
--- a/packages/server/src/subscribers/Bills/WriteJournalEntries.ts
+++ b/packages/server/src/subscribers/Bills/WriteJournalEntries.ts
@@ -19,7 +19,7 @@ export default class BillWriteGLEntriesSubscriber {
   /**
    * Attachs events with handles.
    */
-  attach(bus) {
+  public attach(bus) {
     bus.subscribe(
       events.bill.onCreated,
       this.handlerWriteJournalEntriesOnCreate
diff --git a/packages/server/src/subscribers/PaymentReceive/PaymentReceiveSyncInvoices.ts b/packages/server/src/subscribers/PaymentReceive/PaymentReceiveSyncInvoices.ts
index 26ac16e14..d257de18c 100644
--- a/packages/server/src/subscribers/PaymentReceive/PaymentReceiveSyncInvoices.ts
+++ b/packages/server/src/subscribers/PaymentReceive/PaymentReceiveSyncInvoices.ts
@@ -37,7 +37,6 @@ export default class PaymentReceiveSyncInvoicesSubscriber {
    */
   private handleInvoiceIncrementPaymentOnceCreated = async ({
     tenantId,
-    paymentReceiveId,
     paymentReceive,
     trx,
   }: IPaymentReceiveCreatedPayload) => {
diff --git a/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts b/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts
index d9ae3b643..bffe4260f 100644
--- a/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts
+++ b/packages/server/src/subscribers/PaymentReceive/WriteGLEntries.ts
@@ -36,10 +36,8 @@ 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/WriteJournalEntries.ts b/packages/server/src/subscribers/SaleInvoices/WriteJournalEntries.ts
index 15ba5562b..4b1eab698 100644
--- a/packages/server/src/subscribers/SaleInvoices/WriteJournalEntries.ts
+++ b/packages/server/src/subscribers/SaleInvoices/WriteJournalEntries.ts
@@ -36,6 +36,8 @@ export default class SaleInvoiceWriteGLEntriesSubscriber {
 
   /**
    * Records journal entries of the non-inventory invoice.
+   * @param {ISaleInvoiceCreatedPayload} payload -
+   * @returns {Promise<void>}
    */
   private handleWriteJournalEntriesOnInvoiceCreated = async ({
     tenantId,
@@ -55,6 +57,8 @@ export default class SaleInvoiceWriteGLEntriesSubscriber {
 
   /**
    * Records journal entries of the non-inventory invoice.
+   * @param {ISaleInvoiceEditedPayload} payload -
+   * @returns {Promise<void>}
    */
   private handleRewriteJournalEntriesOnceInvoiceEdit = async ({
     tenantId,
@@ -73,6 +77,8 @@ export default class SaleInvoiceWriteGLEntriesSubscriber {
 
   /**
    * Handle reverting journal entries once sale invoice delete.
+   * @param {ISaleInvoiceDeletePayload} payload -
+   * @returns {Promise<void>}
    */
   private handleRevertingInvoiceJournalEntriesOnDelete = async ({
     tenantId,