diff --git a/src/app.integration.ts b/src/app.integration.ts
index 16ebeaf..9165030 100644
--- a/src/app.integration.ts
+++ b/src/app.integration.ts
@@ -52,7 +52,6 @@ import {
   MobileSession,
   OfflineSyncQueue,
   PushToken,
-  PaymentTransaction,
 } from './modules/mobile/entities';
 
 import {
@@ -146,7 +145,6 @@ export function getAllEntities() {
     MobileSession,
     OfflineSyncQueue,
     PushToken,
-    PaymentTransaction,
     // Billing
     SubscriptionPlan,
     TenantSubscription,
diff --git a/src/modules/invoices/index.ts b/src/modules/invoices/index.ts
index 27cce0a..c2fb0ad 100644
--- a/src/modules/invoices/index.ts
+++ b/src/modules/invoices/index.ts
@@ -1,3 +1,10 @@
+/**
+ * @deprecated This module is deprecated. Use 'financial' module instead.
+ * The invoices functionality has been consolidated into the financial module
+ * for better integration with accounting and GL posting.
+ * See: docs/90-adr/ADR-019-CONSOLIDATE-INVOICES-FINANCIAL.md
+ * Migration: Import from './modules/financial' instead of './modules/invoices'
+ */
 export { InvoicesModule, invoicesModule } from './invoices.module.js';
 export * from './entities/index.js';
 export { InvoicesService, invoicesService } from './services/index.js';
diff --git a/src/modules/mobile/entities/index.ts b/src/modules/mobile/entities/index.ts
index a109c57..88a2c9a 100644
--- a/src/modules/mobile/entities/index.ts
+++ b/src/modules/mobile/entities/index.ts
@@ -3,4 +3,4 @@ export { OfflineSyncQueue, SyncOperation, SyncStatus, ConflictResolution } from
 export { SyncConflict, ConflictType, ConflictResolutionType } from './sync-conflict.entity';
 export { PushToken, PushProvider } from './push-token.entity';
 export { PushNotificationLog, NotificationStatus, NotificationCategory } from './push-notification-log.entity';
-export { PaymentTransaction, PaymentSourceType, PaymentMethod, PaymentStatus, CardType } from './payment-transaction.entity';
+// PaymentTransaction removed - use payment-terminals module instead
diff --git a/src/modules/payment-terminals/dto/transaction.dto.ts b/src/modules/payment-terminals/dto/transaction.dto.ts
index 0a1bfe5..d93f4b4 100644
--- a/src/modules/payment-terminals/dto/transaction.dto.ts
+++ b/src/modules/payment-terminals/dto/transaction.dto.ts
@@ -2,7 +2,7 @@
  * Transaction DTOs
  */
 
-import { PaymentSourceType, PaymentMethod, PaymentStatus } from '../../mobile/entities/payment-transaction.entity';
+import { PaymentSourceType, PaymentMethod, PaymentStatus } from '../entities/payment-transaction.entity';
 
 export class ProcessPaymentDto {
   terminalId: string;
diff --git a/src/modules/payment-terminals/entities/index.ts b/src/modules/payment-terminals/entities/index.ts
index 766af69..a913c03 100644
--- a/src/modules/payment-terminals/entities/index.ts
+++ b/src/modules/payment-terminals/entities/index.ts
@@ -1,3 +1,4 @@
 export * from './tenant-terminal-config.entity';
 export * from './terminal-payment.entity';
 export * from './terminal-webhook-event.entity';
+export * from './payment-transaction.entity';
diff --git a/src/modules/payment-terminals/entities/payment-transaction.entity.ts b/src/modules/payment-terminals/entities/payment-transaction.entity.ts
new file mode 100644
index 0000000..b9da1a4
--- /dev/null
+++ b/src/modules/payment-terminals/entities/payment-transaction.entity.ts
@@ -0,0 +1,115 @@
+import {
+  Entity,
+  PrimaryGeneratedColumn,
+  Column,
+  CreateDateColumn,
+  UpdateDateColumn,
+  Index,
+} from 'typeorm';
+
+export type PaymentSourceType = 'sale' | 'invoice' | 'subscription';
+export type PaymentMethod = 'card' | 'contactless' | 'qr' | 'link';
+export type PaymentStatus = 'pending' | 'processing' | 'completed' | 'failed' | 'refunded' | 'cancelled';
+export type CardType = 'credit' | 'debit';
+
+@Entity({ name: 'payment_transactions', schema: 'mobile' })
+export class PaymentTransaction {
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Index()
+  @Column({ name: 'tenant_id', type: 'uuid' })
+  tenantId: string;
+
+  @Index()
+  @Column({ name: 'branch_id', type: 'uuid', nullable: true })
+  branchId: string;
+
+  @Index()
+  @Column({ name: 'user_id', type: 'uuid' })
+  userId: string;
+
+  @Column({ name: 'device_id', type: 'uuid', nullable: true })
+  deviceId: string;
+
+  // Referencia al documento origen
+  @Index()
+  @Column({ name: 'source_type', type: 'varchar', length: 30 })
+  sourceType: PaymentSourceType;
+
+  @Column({ name: 'source_id', type: 'uuid' })
+  sourceId: string;
+
+  // Terminal de pago
+  @Column({ name: 'terminal_provider', type: 'varchar', length: 30 })
+  terminalProvider: string; // clip, mercadopago, stripe
+
+  @Column({ name: 'terminal_id', type: 'varchar', length: 100, nullable: true })
+  terminalId: string;
+
+  // Transaccion
+  @Index()
+  @Column({ name: 'external_transaction_id', type: 'varchar', length: 255, nullable: true })
+  externalTransactionId: string;
+
+  @Column({ type: 'decimal', precision: 12, scale: 2 })
+  amount: number;
+
+  @Column({ type: 'varchar', length: 3, default: 'MXN' })
+  currency: string;
+
+  @Column({ name: 'tip_amount', type: 'decimal', precision: 12, scale: 2, default: 0 })
+  tipAmount: number;
+
+  @Column({ name: 'total_amount', type: 'decimal', precision: 12, scale: 2 })
+  totalAmount: number;
+
+  // Metodo de pago
+  @Column({ name: 'payment_method', type: 'varchar', length: 30 })
+  paymentMethod: PaymentMethod;
+
+  @Column({ name: 'card_brand', type: 'varchar', length: 20, nullable: true })
+  cardBrand: string; // visa, mastercard, amex
+
+  @Column({ name: 'card_last_four', type: 'varchar', length: 4, nullable: true })
+  cardLastFour: string;
+
+  @Column({ name: 'card_type', type: 'varchar', length: 20, nullable: true })
+  cardType: CardType;
+
+  // Estado
+  @Index()
+  @Column({ type: 'varchar', length: 20, default: 'pending' })
+  status: PaymentStatus;
+
+  @Column({ name: 'failure_reason', type: 'text', nullable: true })
+  failureReason: string;
+
+  // Tiempos
+  @Column({ name: 'initiated_at', type: 'timestamptz', default: () => 'CURRENT_TIMESTAMP' })
+  initiatedAt: Date;
+
+  @Column({ name: 'completed_at', type: 'timestamptz', nullable: true })
+  completedAt: Date;
+
+  // Metadata del proveedor
+  @Column({ name: 'provider_response', type: 'jsonb', default: {} })
+  providerResponse: Record<string, any>;
+
+  // Recibo
+  @Column({ name: 'receipt_url', type: 'text', nullable: true })
+  receiptUrl: string;
+
+  @Column({ name: 'receipt_sent', type: 'boolean', default: false })
+  receiptSent: boolean;
+
+  @Column({ name: 'receipt_sent_to', type: 'varchar', length: 255, nullable: true })
+  receiptSentTo: string;
+
+  @Index()
+  @CreateDateColumn({ name: 'created_at', type: 'timestamptz' })
+  createdAt: Date;
+
+  @UpdateDateColumn({ name: 'updated_at', type: 'timestamptz' })
+  updatedAt: Date;
+}
diff --git a/src/modules/payment-terminals/services/transactions.service.ts b/src/modules/payment-terminals/services/transactions.service.ts
index 146fde5..d51e5ea 100644
--- a/src/modules/payment-terminals/services/transactions.service.ts
+++ b/src/modules/payment-terminals/services/transactions.service.ts
@@ -9,7 +9,7 @@ import {
   PaymentTransaction,
   PaymentStatus,
   PaymentMethod,
-} from '../../mobile/entities/payment-transaction.entity';
+} from '../entities/payment-transaction.entity';
 import { BranchPaymentTerminal } from '../../branches/entities/branch-payment-terminal.entity';
 import {
   ProcessPaymentDto,