How do I find what is preventing moving an issue back to "To Do"?

[Jeff Pfankuch]

Issue:  Cannot move tickets back to "To Do". 

Configuration: Schema and Workflow both include the "All" transmission back to "To Do"

Error:  

Issue ST-347 couldn't be moved.

Something isn't letting us move ST-347 to Backlog. Ask your project administrator to check the workflow settings and transition conditions.

Question:   How do I find what is preventing this move?

[John Funk · Accepted solution]

Hi Jeff,

You need to check the transition to se if there are any Conditions or Validators on the transition.