Message events

Messages pass from one state to another as a result of an event. These events are typically generated by an API call. The possible message events, as shown in Figure 1, are:
putMessage
Places a message on a queue. This does not require a confirmID.
getMessage
Retrieves a message from a queue. This does not require a confirmID.
putMessage with confirmId>0
Places a message on a queue. This requires a confirmID. However, messages do not arrive at the receiving end in the order of sending, but in the order of confirmation.
confirmPutMessage
A confirm for an earlier putMessage with a confirmID>0.
getMessage with confirmId>0
Retrieves message from a queue. This requires a confirmID.
confirmGetMessage
A confirm for an earlier getMessage with a confirmID>0.
browseWithLock
Browses messages and lock those that match. Prevents messages from changing while browse is in operation.
unlockMessage
Unlocks a message locked with a browsewithLock command.
undo
Unlocks a message locked with a browse, undoes a getMessage with a confirmID>0, or undoes a putMessage with a confirmID>0.
deleteMessage
Removes a message from a queue.

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