SAP Message 56815 - Posting run & does not have a valid status

Diagnosis
You tried to post or check a posting run with the wrong status.

Procedure
Only posting runs in 'Documents created' status, or 'All documentschecked' or 'Partially posted' status can be transferred to accountingand updated there.
The statuses 'Documents posted', 'Document transfer failed', and'Incorrect documents' can also be checked.