Forum Discussion
Editing Site Columns on Sub-Sites Doesn't modify the parent Site Column
When editing a site column on a document library or sub-site (by adding an additional choice for example) the change does not seem to get reflected up to the parent site column settings. Is there...
To my knowledge, changes made to a site column at a sub-site or application level are not intended to be passed upstream so as to preserve the integrity of SharePoint's administrative structure.
As for limiting the editing of site columns to only top site/source level, I do not believe there to be a configuration item in SharePoint Online to restrict the editing of site columns downstream; SharePoint treats site columns brought downstream more as templates that can be changed, although it does allow for configuration changes made at the site column's source to be passed downstream to any site or application using that column.
Totally agree with Matt comments!