Choose the key from the allowed namespace

 

https://archive.sap.com/discussions/thread/2088436

When you are trying to clear a warning message in SAP, press enter. That's not intuitive. The natural tendency is to continue to press save.

 

So the sequence of events is:

- change the data

- press the save button

- receive a warning error message

- press enter, and continue to press enter until you are notified that the change has been saved

 

This will work if it's truly a warning message.