Error Message "Unknown name for document property"

After a field has been added, the following error message may appear:
„Error! Unknown name for document porperties."

Possible reasons:

• AddIn has not been installed correctly. If the correct values are registered in the file properties, the AddIn has been installed correctly, see also Show User-Defined Word Document Properties.

• The master original wasn't automatically filled before, the relevant user-defined file property was not yet defined.

• The name of the user-defined file property is incorrect or the prefix for the key is missing.

• The property used is a characteristic value, which is not used in this document type.

• The name is not yet filled by the filling component.