Cancel Match Invoice

Hi,

We have scenario;

Approved PO matched against invoice without receiving.

Buyer modified PO quantity and document is in "Requires Reapproval" state.

Buyer also wants to cancel one line ( PO has six lines and all are matched with invoice).

Before cancelling PO line, Invoice matching should be reverted.

But becuase PO is in "Require Reapproval" state, AP cannot see this PO, they can only see "Approved" PO.

Requirement is;

1-  How to cancel invoice matching

2- Cancel PO line

3- Approve PO

Regards.