Message Number list used by SAP ABAP Program RFKORS20 (Change Selection Criteria for Standard Letters)
SAP ABAP Program RFKORS20 (Change Selection Criteria for Standard Letters) is using
# Object Type Object Name Object Description Note
     
1 Message Number  FB - 504 Only enter account type D (customers) or K (vendors)
2 Message Number  FB - 505 Only select tables KNA1 and KNB1
3 Message Number  FB - 506 Only select tables LFA1 and LFB1
4 Message Number  FB - 507 Select options of report RFKORS00 were updated
5 Message Number  FB - 508 Select options of report RFKORS10 were updated