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000539: Error message from Python.


The calculation used by the Calculate Field or Calculate Value tool is invalid. The error message provided will list the specific Python error.


This error code covers a number of Python errors:

  • Example error 1: exceptions.TypeError: cannot concatenate 'str' and 'int' objects.

The above is a Python-specific error. The calculation is attempting to add or concatenate a string and a number.

  • Example error 2: Invalid field shape@distance

The above is an error using the geometry object. The distance method is not a valid method of the geometry object.

For specific Python issues, consult the external Python help for the version of Python you are using, or consult the Calculate Field or Calculate Value help for more information on these tools.