PO Encumbrance negative balance

Hi Expert,

Kindly help us to sort out the below issues.

There are 30 account code combinations having negative encumbrance balances in one of our custom reports. Due to multiple reasons, negative balances happened to those accounts.

We logged SR and they told us that as per standard it's tough to give the solution. Since the issue started in the year 3 years ago.

Our client is asking to reverse the journal through the backend itself to nullify the negative balances.

So, kindly suggest how to pass the reversal journal to those account codes in the backend itself.

Thank you