Solution : https://service.sap.com/sap/support/notes/571492 (SAP Service marketplace login required)
Key words :
normal function module import parameter, create function module bca_bapi_msg_name_set, function module remains blank, function group bca_bapi_msg, bapi processing type, im_bapi_name type rs38l_fnam, payment item bapis, attached correction instructions, store function, individual correction
Related Notes :
| 571545 | Message mapping: Macro changes in BAPIs |
| 563043 | |
| 317129 | Creating a function module |