3613979 - Error: "Error 518 (RSM): Request number is invalid" occurs randomly in a process which includes two parallel dataflows- SAP Cloud Integration for data services

• Process which includes two parallel dataflows fails with error randomly
• DBS-70404     SQL submitted to ODBC data source <xxx> resulted in error <[SAP][ODBC Driver][SQL Anywhere]Primary key for table 'xxx' is not unique: Primary key value ('''')>.
  REP-100109    Cannot save <RequestID info> into the repository. Additional database information: <SQL submitted to ODBC data source <xxx> resulted in error <[SAP][ODBC Driver][SQL Anywhere]Primary key for table 'xxx' is not unique:  Primary key value ('''')>.
  BAP-220301    Loader BAPI returned message <Error 518 (RSM): Request number is invalid > from method <BAPI_DSOURCE_SEND_CHAR>.

SAP Cloud Integration for data services

error 518, request number invalid, BAPI_DSOURCE_SEND_CHAR, primary key not unique, SQL error, SAP IBP, CI-DS, BW integration , KBA , LOD-HCI-DS , HANA Cloud Integration for Data Services , Problem