Hi,
Do you mean the FI-CA Correspondence of Type 0019 - Payment notification? Those can be created:
1) automatically for underpayments and overpayments based on clearing, I believe, provided it is enabled in customizing of tolerance groups (table E444).
This part of logic is restricted to Document Origin keys:
05 - Payment Lot
25 - Check Lot
55 - Credit Card Lot
That part of standard logic is found in Formroutine AUSGLEICH_KORRESPONDENZ of include LFKB0FA0.
2) additionally, for all Document Origin keys that have indicator "Document From Payment Lot" set in customizing (Table TFK001), you can enable creation of this correspondence via custom function Module assigned to FICA Event 0061 (Transaction FQEVENTS, interface of Function in FKK_SAMPLE_0061).
The Business partners who should receive correspondence need to be returned via table T_ZAMTAB, the Clearing Items in T_FKKCL for those BPs need to be already set active (field XAKTP = 'X'). Look for logic for this additional correspondence in Formroutine LETZTE_PRUEFUNGEN, Include LFKB0FL0.
Hope this was the pament notification you were looking for...
cheers
Janis