IMHO There should be the term "Port Instance" or something else. In HAT we can see Service Instances in two main classes: Orchestration and Messaging. The first one is quite understandable. But the second one is not described in BTS Help. As I can imagine it is the part of the port which created in "per-message" basis like Orchestration. Now "Messaging" is the term for it. But Messaging could be attached to anything in BizTalk, it is too wide term. But I don't mind any term. Now we DON'T have ANY ......