Newer version saved elsewhere

A newer version of the workflow, or of the project brief, was saved after your copy was opened, for example in another tab. Saving your copy would undo changes you have not seen, so it was refused.

What to do

Reload the workflow or brief, make your change again on the current version, and save.

Where it comes from

Checked before every run, for any node. It is one of the messages checks before a run.