Issue after Deployment of RMS Restful Web Service

Hi All,

After deployment of Restful Web Service we are facing issue as below:

Steps:
1- Install RMS RESTful Web Services
2- Access JAVAdoc at http://<host:port>/RMSService --> working
3- Access RMS ReSTful Web services’s WADL file at http://<host:port>/RMSService/services/private/application.wadl -->working
4- Access any service, example http://<host:port>/RMSService/services/private/Common/vDate or http://<host:port>/RMSService/services/private/vdate --> working
5   Issues with parametric urls http://<IP>:<portno>:/RMSService/services/private/PurchaseOrders/item?itemSearchType=ITEM&searchString=12 --- NOT WORKING

its always return
It always gives output "totalRecordCount": Below is the output: