Unable to fetch Date fields via FM in OData service

Dear experts,

I am following SEGW approach to develop OData service via standard function module for Query and Read operations.

The issue is that OData service does nt work when date fields are added in the properties of entities , and throws an error

"in the context of OData service an unknown internal error occurred" . Looking at the error logs i see the below message "Invalid format (return table)  Row Number 1 property Name : STRMLFNT", property value '00000000'

But when Date related fields are removed from OData eityty properties the service works fetching the data of other fields, Please let me know how to fix this.

Thanks in advance

Kumar