This is a tag that the queue manager associates with the resources that are affected by the application during this connection. Each application or application instance must use a different value for the tag, so that the queue manager can correctly serialize access to the affected resources. See the descriptions of the MQCNO_*_CONN_TAG_* options for further details. The tag ceases to be valid when the application terminates or issues the MQDISC call.
Use the following special value if you require no tag:
For the C programming language, the constant MQCT_NONE_ARRAY is also defined; this has the same value as MQCT_NONE, but is an array of characters instead of a string.
This field is used when connecting to a z/OS queue manager. In other environments, specify the value MQCT_NONE.
This is an input field. The length of this field is given by MQ_CONN_TAG_LENGTH. The initial value of this field is MQCT_NONE. This field is ignored if Version is less than MQCNO_VERSION_3.
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