Cause:  Voucher was entered in Vision and then paid in Vision.  The check was voided, and then the voucher was Unposted, and then the payment was unposted.  How to remove the void.

Resolution:  Steps to undo a void:

1. Find out the posting sequence of the Voided check that need to be unposted.
2. Go to Utilities> Advanced Utilities > Undo Posting.
3. Select the transaction type of Void Payment.
4. Look for the posting sequence number.
5. Click Undo Posting.