Error in Update method in NW Gateway

Hi All,

I have used "Create Service (Method => FILE_UPLOAD_CREATE_ENTITY) from Service Implementation"  for update data to backend system and i have written logic for update back end system.

When i test in SAP NW Gateway Client i am getting below error

Browser showing below output/error

I have refered http://scn.sap.com/community/netweaver-gateway/blog/2014/03/06/let-s-code-crudq-and-function-import-operations-in-odata-service blog but i couldnt get any idea.

Kindly help me on this

Thanks,

Akshath