Cause: An ACH file has not been created for the batch. It might be that all Advice Slips in the batch have been voided, in which case you cannot create an ACH file for the batch.
Resolution 1: Open the Create and Send ACH file screen and create an ACH file for the batch.
Resolution 2: If there are no non-void advice slips in the batch, use SQL Server Management Studio to update the cleared and clear date fields on the batch so that it can be posted.
Example: update batch set cleared = '1', dateclr = '01/22/2021' where module = 'PR' and batnbr = '012345'