Enhanced master data update cannot be disabled for characteristic &1

What causes this issue?

The characteristic has already been activated with the setting "Enhanced
Master Data Update" enabled. You cannot deactivate the setting once the
characteristic is active.

System Response

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

How to fix this error?

If you want to unset the setting<(>,<)> you have to disable the master
data setting in general for the characteristic. After unsetting and
activating the characteristic<(>,<)> you can activate the master data
setting again without enhanced master data update.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.