This article will discuss a possible cause of an error message that could be encountered when trying to delete a location. The error message begins, "Error - RunSPReturnValue('dbo.Mnt_Delete_Location')"
Please see the image below for the full message and what the error message looks like.
There is a known issue where this error will appear when there is an attempt to delete a location that is currently used in a rule in ShadowPrint.
Please first remove the rule in ShadowPrint that references this location and then delete the location as normal.