Description
This error can occur for a variety of reasons, including the following:
- The input is being edited.
- The name of the output is invalid and is being validated by the tool at run time to a name that already exists. For example, a name of output.xxx in a geodatabase will be written by some tools as xxx. If the validated name already exists, the tool will fail.
Solution
If the input is being edited, save or discard the edits and rerun the tool.
If the output name is invalid, correct the name and rerun the tool.