When validating a payment in the Enhanced Revenue Batch after Importing, you may receive the error: Please enter a valid 'Application Code.' However, there are no fields specified as causing the issue.
We are currently evaluating this issue and will update this article when we have more information.
Steps to Duplicate
In the database, go to Administration>Batch>Batch Entry.
Click the arrows next to the affected batch and click Edit.
Click the red X next to the problematic entry to see the error.