SAP Message 6D218 - Adjustment of advance payments not possible for extern.ht.exp.stt.

Diagnosis
This external heating expense settlement &v1& was carried out in anolder release, therefore some data required for calculating thebackdated adjustment of the advance payments is missing.

Procedure
Adjust the conditions using the corresponding function within the rentadjustment (free condition adjustment) or reverse the external heatingexpense settlement and carry it out again.