Description
A document property name violates the naming restrictions.
The property name cannot start with a number or the text esri__.
Some characters are not permitted anywhere in the property name, including spaces and ASCII symbols such as the forward slash (/) and colon (:), as well as control characters such as \n and \r that correspond with ASCII codes less than 32.
The name must have a maximum of 64 Unicode characters.
The name must not be a reserved keyword in any associated system such as objectid, globalid, NONE, RETURN, and CONTAINS.
Solution
Provide a document property name that satisfies all naming restrictions.