How To Fix W4001 - &: & purchase order exists

SAP Error Message - Details

• Message type: E = Error

• Message class: W4 - Messages for material discontinuation

• Message number: 001

• Message text: &: & purchase order exists

What causes this issue?

Purchase order items were found for this material and this plant.

How to fix this error?

If the purchase order items have not subsequently been processed, you
can delete the purchase order items for the material and the plant.
If full goods receipt has not yet taken place for a particular purchase
order item, you can reset the purchase order quantity.
If the purchase order item has been delivered in full, but not yet
completely settled, you have to wait for the invoice verification
function to act on this.
If a purchase order has been processed in full, you can delete the
processed purchase order items using the archiving programs.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

<DS:TRAN.ME22N>Change purchase order</>
<DS:TRAN.ME98>Archive purchase order</>

Error message extract from SAP system. Copyright SAP SE.