FAQ
From RFF Wiki
Retail Locations
Can I change the Code of a Retail Location as Data Manager?
yes, Retail Locations is a separate type of location, where you can create/change the code of the location.
If the Retail Location is derived from a location which was part of Master Data, then the code will be taken from there, but it can be modified by a Data Manager.
Codes of locations from Master Data cannot be changed. They have to be changed in the system, where they were extracted from.