HTTP 500 (InternalServerError) in SalesPriceList BO.

Hello there!

I'm trying to execute "QueryByGroupCode" query from "SalesPriceList" object but i'm facing the following error.

1) Access Repository Explorer.

2) Locate SalesPriceList in Business objects.

3) Expand SalesPriceList BO and locate "QueryByGroupCode".

4) Execute "QueryByGroupCode".

Error: HTTP 500 (InternalServerError) - Dump or unhandled exception in backend.

SDK is closed automatically.

How shoud I proceed in such cases?

Thanks in advance!