feat: Receivable and payable aging summary financial statement.

server/src/models/Expense.js

@@ -10,10 +10,20 @@ export default class Expense extends TenantModel {
     return 'expenses_transactions';
   }
 
+  /**
+   * Account transaction reference type.
+   */
   static get referenceType() {
     return 'Expense';
   }
 
+  /**
+   * Model timestamps.
+   */
+  static get timestamps() {
+    return ['createdAt', 'updatedAt'];
+  }
+
   /**
    * Model modifiers.
    */