| Contract account is blocked for processing until &1

What causes this issue?

An entry in the contract account determines that no dunning notices or
or debit memos will be processed for the account before &V1&. The
indicator '&V2&' has been entered as the blocking reason.

System Response

No transactions involving debit memos are made for this account.

How to fix this error?

Transactions involving debit memos will automatically be made for this
account if the posting date of the payment run is after &V1&. If such
collections are made before &V1&, the date should be deleted from the
contract account master record.

Error message extract from SAP system. Copyright SAP SE.