No (suitable) phase selected

What causes this issue?

This message is used in the following instances:
Calling the process instruction overview:
You have tried to call the process instruction overview without
selecting a phase first.
Creating control recipes
To create a control recipe, you must explicitly or implicitly select
phases.
You explicitly select phases by flagging them in the operation/phase
overview. You select phases implicitly by flagging their superior
operation or by executing the "Create control recipe" function for the
entire order.


&NOTE&
Phases for which a control recipe has already been generated are no
longer selected by the system. Therefore, this message is also
displayed when you only select phases that have already been used to
generate control recipes.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Flag at least one phase.

Error message extract from SAP system. Copyright SAP SE.