Solution : https://service.sap.com/sap/support/notes/1258089 (SAP Service marketplace login required)
Summary : Key words : Related Notes :
This SAP Note addresses the necessity to adhere to specific design rules during the addition of new records in the start routine of a transformation concerning the 'source_package' table. The structure of 'source_package' is defined by the field symbol
thefield symbol <source_fields>, data transfer process, prerequisites error handling, error handling functions, error handling, data records, error stack, error occurred, error occurs, start routine
1227667 Guidelines for expert routine: Design rules 1223532 Desgin rules: Adding records to end routine