0

Normal, successful completion. 

MTA_BADARGS

This value was returned for one of the following reasons: 

1. A NULL value was supplied for the dq_ctx call argument.

2. An invalid dequeue context was supplied for dq_ctx.

3. A required argument to an item code was NULL.

MTA_NOSUCHITEM

An invalid item code was specified. 

MTA_THREAD

The MTA SDK detected simultaneous use of the dequeue context by two different threads.