Re: [ebxml-msg] RE: [ebxml-dev] SequenceNumber?

Bob, thanks for forwarding this along.

Jeong,

What you are looking at is the result of a long and involved discussion
within the TC.  The SyncReply module changed significantly between
versions of the specification.  At this point, the binding to HTTP
always returns the ebXML acknowledgment in the HTTP reply but application
information (business signals and other data) is optional and controlled
by SyncReply.

We realized conflicts could occur if a business response was requested
in the same HTTP request as an out-of-sequence ebXML message.  Due
to that potential, we decided to avoid the problem entirely and disallow
SyncReply and MessageOrder in the same ebXML message.  MessageOrder
and SyncReply are both optional.

Since I'm not looking at the document at the moment, I'm hoping I captured
this correctly.  If others could jump in with pointers to the text,
I'd appreciate it.

thanx,

    doug

"Miller, Robert (GXS)" wrote:
 

Hi Jeong,

I am a lurker on the ebxml-dev list, and a member of the
Message Services team.  I did not notice earlier that your message
was not addressed to the msg team.  I am forwarding it now on yur
behalf.

Cheers,

        Bob Miller

        eBusiness
Consultant

        Global eXchange
Services

 

-----Original Message-----

From: Jeong Ahn Lee [mailto:]

Sent: Wednesday, July 10, 2002 4:22 AM

To: 

Subject: [ebxml-dev] SequenceNumber?

 

Hi all,

in ebXML V1.0 the SequenceNumber was mandatory for

reliable messaging.

but in V2.0 it says, When the MessageOrder element is

present,

DuplicateElimination MUST also be present and

SyncReply MUST NOT be present.

but for reliable messaging, we use HTTP so that we can

get the respone

immediately, this is synchronize messaging, to achieve

this we use the

SyncReply element indicating i expect the response in

the same connection.

but SequenceNumber is also very much important for

reliable messaging if i

am correct. why in the specification they have made it

like, when

SequenceNumber element is present SyncReply MUST NOT

be present.

any light on this.

Jeong

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