Susequent adjustment of purchase order items is not supported

What causes this issue?

Using the function module MB_CREATE_GOODS_MOVEMENT, you want to make a
posting for subsequent adjustment of "material provided" items with
reference to a subcontract order (MSEG-KZBEW = O).

System Response

It is not possible to perform this function.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.