diff --git a/src/transaction/dto/order-transaction.dto.ts b/src/transaction/dto/order-transaction.dto.ts
index c492017..ff3d293 100644
--- a/src/transaction/dto/order-transaction.dto.ts
+++ b/src/transaction/dto/order-transaction.dto.ts
@@ -1,4 +1,4 @@
-import { IsNotEmpty } from 'class-validator';
+import { IsNotEmpty, IsOptional } from 'class-validator';
 
 export class OrderTransactionDto {
   @IsNotEmpty()
@@ -7,5 +7,6 @@ export class OrderTransactionDto {
   @IsNotEmpty()
   destination: string;
 
+  @IsOptional()
   trx_id: string;
 }