Solution : https://service.sap.com/sap/support/notes/382492 (SAP Service marketplace login required)
Key words :
additional key words cn21, attached source code corrections, header-assigned network, f3 back button, settlement rule, simply pressing, program error, solution implement, maintenance screen, maintenance
Related Notes :
638879 | Settlement rule: Termination DYNPRO_SEND_IN_BACKGROUND |