3766933 - "Key column(s) not selected in input [1402]" will occur if the field used for packaging is not a key field - BW/4HANA & SAC

During data extraction from SAC, selecting a non-key field for the "Use for Packaging and Partitioning" setting will result in the error shown below.

Database error 403 at OPC
> internal error: Remote execution error Error occurred when
> reading data from entitySet
> org.apache.olingo.client.api.communication.ODataClientErrorE
> eption:
> {"error":{"code":"*","mes
> ge":"Key column(s) not selected in input [1402]"}}null
> [HTTP/1.1 400 Bad Request] for query "SELECT

SAP BW/4HANA

"Use for Packaging and Partitioning"  SAC  SDA , KBA , BW4-DM-DTP , ABAP Orchestration of Data Transfer Process , Problem