PEM objects and response modes

The PEM objects use Message Queuing for the Without Response mode and the MES Stateless API for the With Response mode.

Each message from a PEM object has a unique characteristic and must be evaluated accordingly. For example, messages that are sent using With Response mode must be evaluated at run time by the available object attributes.

Error messages generated by PEM objects when the Without Response mode is selected are different, and can be viewed using the Rejected Message Viewer in the MES Client application.

PEM objects generate the following two error types:

• Production Event messages

• Validation messages

Validation messages are shown when the following pattern or other validation errors occur:

• Returned to the triggered object when the With Response mode is selected.

• Written to the RejectedProductionMessages table when the Without Response mode is selected.