When deleting a charge, credit or refund, the error Transaction [Transaction ID] cannot be deleted because one or more records are associated with it occurs. This occurs for posted and not yet posted activity, whether it is applied or unapplied.
We resolved this issue in version 7.82.104, patch 16.
If this occurs for a Refund, do the following: 1. Go to the Payment record 2. Choose the Student Billing Detail tab 3. Click Add/Edit Applications 4. Unmark the checkbox next to "Apply" for the refund.