Operation Validity

When you attempt to load an operation into a recipe procedure, the following checks are performed to ensure the validity of the operation:

• The process class assigned to the operation must exist in the Equipment Requirements Editor. If the class does not exist, an error message appears and the load fails.

• If the process class exists, the process instance is automatically added to the recipe equipment requirements. You must acknowledge the message for each instance.

• Materials included in the operation definition can optionally be added to the recipe formula. You must acknowledge the message for each material.

  Note: Remember that adding operations from the library can result in the addition of process and transfer instances to the recipe equipment requirements. You must ensure that the recipe equipment requirements have only the required instances defined. When the recipe is scheduled as a batch, the train must have equipment for each instance regardless of whether the instance is called in the procedure. If not, you cannot initialize the batch.