Time Zone & Locale value cannot able to modify in O365

Question

Environment : Office 365

 

Description: 

When i changed the Time Zone & Locale Value in the regional settings i am getting the below error can any one assist.

 

Error Details:

 

The column "Preservation Original Location" in the list or library "Preservation Hold Library" has been marked for indexing. Please turn off all indexed columns before changing the collation of this site. You may re-index those columns after the collation of the site has been changed.