Message type code

The following type codes are used in IP messages:
A  Action
The message indicates that an action is required.
E  Eventual Action
You must eventually take some action to correct a problem. The system continues processing without waiting for a response.
I  Information
The message is for your information. This type code can be used to notify you of an error. No response is necessary, but you might need to take some action.
S  Severe Error
The message is for a system programmer.
W  Wait
Processing stops until the operator takes a required action.