How to correct a partially receipted Amount PO which does not have a quantity value or unit of measu

A buyer has created an amount based PO 56691.

The PO does not  have a Quantity value or UOM.

The requestor partially receipted the PO and received a receipt number.

When the Goods Received Advice report was requested it illustrated that the whole amount was receipted (might be a report problem).

If we try to correct the receipting the system error displayed states that the record we are trying to retrieve does not exist. I think this is because the system identified/marked the entire PO amount as being receipted instead of it being partially receipted.

When we try to perform an additional receipt we encounter the same error mentioned above.