Hi
Kindly refer the SAP Notes above the Error message
1695871 - "An internal error occurred while calling
1878387 - Error: ” An internal error occurred while calling 'getBlobChunk' API
1848074 - Error: "An internal error occurred while calling ‘ProcessDPCommandEX’API
1911791 - “An internal error occurred while calling 'processDPCommandsEx' API.
Regards
Ram