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Subject: Presence of an wsa:relatesTo part within an acknowledgement message
Hi All, I have a question regarding the relationship between an sequence acknowledgement message and the corresponding request message. I think I missed a part of the discussion that happened through this list. Pardon me if this issue was discussed previously. The problem is weather an wsa:RelatesTo tag should be present in an acknowledgement message. The presence of an wsa:RelatesTo part will make implementation issues such as dispatching easy. I.e. an web service framework will be able to identify the relationship between an ack message and the original application message that asked for this and it will be able to easily relate them (without going to the RM level). But to my knowledge,having a wsa:relatesTo value without the wsa:relationshipType attribute imply that the second message is an 'reply'. But an acknowledment is not an application level reply to the original message and it might be better to have an different value for the wsa:relationshipType attribute. On the other hand somebody could argue that the wsa:relatesTo header should not be present in an ack message since it is an RM control message and since it may have no direct connection with the original application message (even though it trigured the RM destination to send this ack). What should be the convention ? Thank you, Chamikara
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