Solution : https://service.sap.com/sap/support/notes/382779 (SAP Service marketplace login required)
Key words :
prerequisites inadequate documentation solution, sapi user exit, fill additional fields, inversion extraction reason, cancellation flag settings, datasource maintenance rsa6, invert fields, cancellation flag, inversion behavior, automatic inversion
Related Notes :
492828 | Determining the transaction key for 2LIS_03_BF + 2LIS_03_UM |
316755 | DataSource: Cancellation field cannot be maintained |