## Parent Material Handing with E94

E94 defines a Control Job state model as following:

![ControlStateModel](howto.images/e94ControlStateModelDiagram.png)

Currently the following transactions of the state model should be used to trigger the changes using the following workflows:

| Transaction | Transaction Description | Workflow                                  | Action Description
| --- | ---------- |------- |------------ |
| E94 -> 5  | Selected to Executing | OnProcessStarted | Changes Parent Material State to In Progress |
| E94 -> 7  | Waiting for Start to Executing | OnProcessStarted | Changes Parent Material State to In Progress |
| E94 -> 10 | Executing to Completed |OnLoadPortReadyToUnload| Changes Parent Material State to Completed, executes Material Out |

!!! note
      If the customer is considering having multiple Parent Materials per carrier, or running multiple Process Jobs per Control Job, you should consider that either:

      - The implementation should not use these Control Job based event, but actually Process Job based events.
         - This will allow you to have different event for each Process Job.
      - If using Control Job based events, both Process Start and Process Complete should use the **IsBatchAction** flag for the Generic Workflows set to True, in order to execute the Actions to all affected Materials on MES.

## Basic Tips

Control Job Id variable should be used as the input for the Generic Workflows Process Start and Process Complete corresponding input.