S/4HANA batch import for credit memo

Hello,

the requirement is to import credit memo data with an batch input in S/4HANA. No other method should be use.

The only way I found is, to use the report RFBIBL00. Here I have to write a small program to call this report with the parameters of BBSEG, BBKPF and the path of the file on the server.
Is there an other posibility to import credit memo data in a S/4HANA system?

regards
Gunter