CRM Analytics Recipe Failure: 'Invalid Extract Field Name' Error When a Referenced Field Is Missing from the Dataset.

Remove the reference to a Field listed in a Recipe error message in the Recipe JSON. 

To do this follow the steps below:

1. Open the affected Recipe.
2. Click on the Input source where the field is missing.
3. Click Change Columns.
4. Unselect then reselect one of the columns to regenerate the recipe JSON.
5. Click Next then Save and Run.

OR

1. Go to the specific Recipe encountering the error
2. Click the 'Download recipe JSON' button found along the top left of the Recipe UI
3. Open the JSON file and "Control+F" for Windows or "Command+F" on a Mac and search for the specific Field listed in the error message
4. Delete the specific Field, from the JSON and save the file
5. Go back to the specific Recipe
6. Click the 'Upload recipe JSON' button found along the top left of the Recipe UI
7. Click continue when you encounter the 'Overwrite the Recipe?' popup
8. Select the edited JSON file and click 'Open'
9. Once uploaded click the 'Save and Run' blue button in the upper right of the Recipe UI