Adjustment accounting entries for out of Balance expense reports already posted to GL

How do we create adjustment accounting entries for out of Balance expense reports already posted to GL?

We have 6 expense reports where system did not generate balancing accounting entries

This was mainly due to mismatch in expense type and payment

Ex: Prepaid expense type has employee Paid payment type

All the accounting entires have been posted to GL and since they are old transactions, reversal is not a option

Is there a way to create balancing accounting entries , we know which lines are out of balance.

We tried Journal expense report approach but system does not allow imbalanced accounting entries