Hi,
please check in function module CO_RU_CONF_POST using break-point. There both messages RU100 and RU110 are close together:
WHEN OTHERS.
MESSAGE s100 WITH l_aufnr.
ENDCASE.
ELSE.
IF gprot_flg IS INITIAL AND NOT flg_fkt IS INITIAL.
MESSAGE i110 WITH cnt_retro_ok tmp_retro_err.
ELSE.
MESSAGE s110 WITH cnt_retro_ok tmp_retro_err.
The code should be look like above. The reason fore the different messages should be found before this code or in the interface parameters.
Regards,
Klaus