update

src/main/java/au/com/royalpay/payment/manage/application/core/impls/SimpleClientApplyServiceImpl.java

@@ -281,6 +281,11 @@ public class SimpleClientApplyServiceImpl implements SimpleClientApplyService {
             throw new BadRequestException("New merchant over limit,Please contact us");
         }
         JSONObject apply = sysClientPreMapperMapper.findByUserName(username);
+
+        JSONObject account = clientAccountMapper.findByPhone(apply.getString("contact_phone"), "+61");
+        if (account != null) {
+            throw new ForbiddenException("The user name has been registered");
+        }
         String clientMoniker = generateClientMoniker();
         JSONObject sysClient = new JSONObject();
         sysClient.put("company_name", apply.getString("company_name"));