Change in PR Qty/Price should update the existing PO

Hi all,

The requirement is -

PR created - approved - Aut PO conversion via ME59N - PO created.

Now when there is a quantity or price change in PR, after ME59N is run, it should update the existing PO instead of creating a new PO (current settings).

Please suggest how to take this with the technical team as they are unable to achieve this via user exit.

Thanks in advance.

Regards,

Akash