## Load Port Integration with E87

E87 defines a Load Port state model as following:

![LoadPortTransferStateModel](howto.images/e87LoadPortTransferStateModelDiagram.png)

This state models map partially to the template Semi Load Port State Model, that you can see on the following image:

![SemiLoadPortStateModel](howto.images/semiLoadPortStateModel.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
| --- | ---------- |------- |------------ |
| E87 -> 6  | Ready to Load to Transfer Blocked | OnCarrierArrived | Changes Load Port State to Transfer Blocked |
| E87 -> 9 | Transfer Blocked to Ready to Unload |OnLoadPortReadyToUnload| Changes Load Port State to Ready To Unload |
| E87 -> 8 | Transfer Blocked to Ready to Load | OnCarrierRemoved  | Changes Load Port State to Ready to Load, if Load Port Resource has Automation Mode Online, Undocks the Docked Container|