Message Number list used by SAP ABAP Function Module J_1A_POST_DISCOUNT_DOCUMENTS (Post discount memos (one per discount line of payment document))
SAP ABAP Function Module J_1A_POST_DISCOUNT_DOCUMENTS (Post discount memos (one per discount line of payment document)) is using
# Object Type Object Name Object Description Note
     
1 Message Number  8A - 603 No number range defined. Discount document cannot be posted
2 Message Number  FZ - 339 Document number & & already assigned (incorrect status in no.range &)