Settlement document & (credit memo) has only been parked (Please post)

What causes this issue?

Settlement document &V1& (company code &V2&, fiscal year &V3&) has only
been parked.

System Response

Since the updating of the cumulative rebate income figures does not
take place until the document is posted, no further settlement
accounting is possible for rebate arrangement &V4&. The income from
previous settlements is not known.

How to fix this error?

Please look into this matter. If appropriate, please post the parked
credit memo no. &V1&. You can also delete the credit memo if necessary
(new settlement accounting for condition record). You can take either
action directly from within the list processing.

Error message extract from SAP system. Copyright SAP SE.