Try each of the following steps in order until the issue is resolved:

1. Open the Post Parameters.
2. Select the Filters tab.
3. Mark the Include deposits whose actual receipt totals do not match the projected totals checkbox.
4. On the Filters tab, choose Selected by Deposit and select the deposit(s) in question.
5. Click Validate to ensure the deposit shows to be posted.
6. Click Post.

If a saved Post Parameter is being used. Create a new Post Parameter and run a Validation.