The rule
A ticket system have their valid transitions documented in the following table, where O represents allowed and X represents not allowed.
From \ ToReportedOpenIn ProgressIn ReviewDeliveredRejectedReopenReported-OXXXOXOpenX-OXXOXIn ProgressXX-OXOXIn ReviewXOO-OOXDeliveredXXXX-XORejectedXXXX...