I have a simple workflow without escalation or delegation where I am using a Flexi Task to have a three way decision point : Approve, Reject and Changes Required.
Without fail the workflow errors with the message:
"Error in task. Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression."
I have found three previous forum posts/questions where people report this
But other than a tantalising idea that deleting rows in an undefined table will fix it (something my system admins said sounds highly suspect), there doesn't seem to be a solution posted.
I'd appreciate any help.