SAP Message >0019 - Formal error: Reconciliation key &1 not permitted for mass reversal

Diagnosis
Parameter I_FIKEY was specified when calling up the function moduleFKK_REVERSE_DOC_MASS. However, the parameters I_RESOB and I_RESKY werenot specified when the function module FKK_CREATE_DOC_MASS_START wascalled up beforehand. This combination is not permitted.
You can only specify a reconciliation key for mass reversal if it hasalready been established that the reconciliation key can only be usedfor a certain object class.

System Response
The reversal is not posted.

Procedure
INCLUDE NA_SYSADMIN1 OBJECT DOKU ID TX

Procedure for System Administration
INCLUDE FICA_NA_OSS OBJECT DOKU ID TX