Quick Red Error Flashes During Document Generation

I see a quick red error flash during document generation. When I’m creating a quote the green progression bar pushes along slowly, then right at the end it goes red for a split second like there’s a small error – although it continues to progress and completes the document generation.

Solution:
It is possible that the quick red error you are getting is related to the field update on the Document Action. Check that the field you are trying to update is on the same object as the base object of the Document Action. For example, if the base object is Quote and you are trying to update the Stage field on the Opportunity object, you may see this error. To resolve, removed the field update from the button code and check to see if the error is resolved.