Acknowledgment Message Properties

Applies To: Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server Technical Preview, Windows Vista

The properties of an acknowledgment message are set by the system. They provide information that can be used by the sending application that is reading the messages in an administration queue. The following is a list of the message properties that the system sets when it generates the acknowledgment message:

• PROPID_M_ACKNOWLEDGE or MSMQMessage.Ack

  Not set.

• PROPID_M_ADMIN_QUEUE or MSMQMessage.AdminQueueInfo

  Not set.

• PROPID_M_APPSPECIFIC or MSMQMessage.AppSpecific

  Same as original message.

• PROPID_M_BODY or MSMQMessage.Body

  For positive acknowledgment messages, the body of the acknowledgment message is empty. You must refer to the original message to see the message body.

  For negative acknowledgment messages (with the exception of private, encrypted messages) the body of the acknowledgment message contains the message body of the original message.

• PROPID_M_CLASS or MSMQMessage.MsgClass

  Specifies the appropriate positive or negative acknowledgment class. For information on the different acknowledgment classes, see Acknowledgment Message Classes.

• PROPID_M_CORRELATIONID or MSMQMessage.CorrelationId

  Specifies the message identifier of the original message sent by the sending application.

If the correlation identifier of the original message contained an application-defined identifier, that information is not included in the acknowledgment message.

• PROPID_M_DELIVERY or MSMQMessage.Delivery

  Same as the original message.

• PROPID_M_EXTENSION

  Same as the original message.

• PROPID_M_JOURNAL or MSMQMessage.Journal

  Same as the original message.

• PROPID_M_LABEL or MSMQMessage.Label

  Same as the original message.

• PROPID_M_MSGID or MSMQMessage.Id

  Message identifier of the acknowledgment message.

• PROPID_M_PRIORITY or MSMQMessage.Priority

  Same as the original message.

• PROPID_M_RESP_QUEUE or MSMQMessage.ResponseQueueInfo

  Destination queue format name of the original message. When messages are sent to multiple destination queues, this property provides the format name of the destination queue for one copy of the message.

• PROPID_M_RESP_FORMAT_NAME or MSMQMessage.ResponseDestination

  (Introduced in MSMQ 3.0) Destination queue format name of the original message. When the original message is sent using a distribution list format name, multicast address format name, or multiple-element format name, this property is set to the distribution list, multicast, or multiple-element format name specified when the original message was sent.

• PROPID_M_TIME_TO_BE_RECEIVED or MSMQMessage.MaxTimeToReceive

  Set to maximum time allowed by Message Queuing.

• PROPID_M_TIME_TO_REACH_QUEUE or MSMQMessage.MaxTimeToReachQueue

  Set to maximum time allowed by Message Queuing.

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