1. Serial countersign internal return

The step sequence number to return to (CompleteOrder-1) is determined according to the sequence of serial countersigning. After the return, the current countersigning sub-node is in the returned state, and the countersigning sub-node of the previous step is in the to-do state.

  1. Serial countersign returns to the previous task node

If the current countersign is in the first to-do sub-node task, when returning, you need to jump back to the task node before the main counter-sign node, so that all sub-nodes of the counter-sign node will return or cancel (other sub-nodes) status.

  1. Return with parallel countersign

When the parallel countersign is returned, because there is no internal execution order restriction, the task is transferred back to the task node before the main countersign node, so that the child nodes of the entire countersign node will be returned or canceled (other child nodes).

  1. Ordinary task nodes return to the countersigning node

When the previous node of a common task node is a countersigning node, when returning, it is necessary to determine if it is a countersigning node and stay at the task link of the last person who completed the countersigning.