Each of the switching sheet types have step execution rules that either require all the steps to be executed in order or executed out of order. Step grouping has been setup in each of the sheet types, except Outage Correction, to allow step executions to work in the opposite way of non-grouped steps (see “Grouping and Ungrouping Steps”). Outage Correction requires that the steps be validated in order, so out of order execution is not available for that sheet type.

When in-order execution rules are turned on, then the steps have to be instructed, executed, aborted or failed in the order that they are listed in the switching steps list. You cannot complete step 2 before step 1 has been completed, aborted, or failed. When out of order execution rules are turned on, then any step in a non-terminal state can be completed, aborted or failed at any time.

Each switching sheet type is configured with different rules for whether steps can be executed in or out of order normally and then also whether steps can be executed in or out of order when the steps are part of a grouping. The table below describes how each sheet type is configured.