We have SAP Standard Field Selection Key "NBF" is being assigned to NB and other PO document types in customizing.
There are already PO's existing in Production System with PO Document Type "NB" with Combination of "NBF".
To handle some new requirement, we thought of Creating a new Field Selection Key (Example: "ZBF") and assign to existing PO document type "NB".
We would like to know the impact on existing PO's when we change the Field Selection Key.
Please share your experience if any.