diff --git a/apps/api/src/app/order/create-order.dto.ts b/apps/api/src/app/order/create-order.dto.ts
index af87fd93e..ba7a1d868 100644
--- a/apps/api/src/app/order/create-order.dto.ts
+++ b/apps/api/src/app/order/create-order.dto.ts
@@ -44,8 +44,7 @@ export class CreateOrderDto {
   customCurrency?: string;
 
   @IsEnum(DataSource)
-  @IsOptional()
-  dataSource?: DataSource;
+  dataSource: DataSource;
 
   @IsISO8601()
   @Validate(IsAfter1970Constraint)