How to Release Operations and Phases 
You can release individual operations/phases of the process order. If you release an operation, all the phases belonging to this operation are also released.
The process order is then "partially released" and the status PREL appears under System status in the main header.
Once you have released all the operations of a process order, the order automatically receives the status released.
Once you have released all the phases of an operation, the operation is automatically released.
If you delete the last phase of an operation without releasing it, the operation is released.
To release an operation or a phase, proceed as follows:
The system now releases the selected operation(s) and/or phases.
You can also release individual operations and phases from the 1-line operation overview as follows: