Is the only way to correct an erroneous negative "other credit" to run a Data Verification?

SOLVED

 We are certain that it wasn't a duplicate entry as it's not showing anywhere else in Sage, only on the original invoice as a negative credit.  The erroneous negative Other Credit showing on invoice and not a duplicate payment or journal entry.  Cannot delete or update the amount that is doubling the invoice amount.  Other sites suggest to run a Data Verification, but I'm looking for another way to correct if there is one.  Thank you!