Issue - 304 - clarification on whether the QName of a fault needs to be unique across all portTypes and operations

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Issue - 304 - clarification on whether the QName of a fault needs to be unique across all portTypes and operations
Status: received

Date added: 21 Jul 2006

Date submitted: 20 July 2006

Submitter: Alex Yiu

Description: The spec text related to SA00049:

"This results in a fault identified in WS-BPEL by a QName formed by the 
target namespace of the corresponding portType and the fault name. To 
ensure uniqueness, this uniform naming mechanism MUST be followed  even 
though it does not match the WSDL’s fault-naming model ..." 

Does that text require the QName of a fault to be unique across all portTypes and operations?  That is: two different operations within the same portType or two different portTypes of the same TNS define the same fault name (potentially with two different message types). Are these cases of WSDL design legal and usable by WS-BPEL? 

It seems to me that the intention of phase "to ensure uniqueness" is unclear. Does it just mean a uniform behavior? Or, it tries to enforce universally unique across all WSDL definitions? 

Questions to consider:

Does WS-I have a similar universally-unique restriction? If not, we may have problems in taking WS-I complaint WSDL pattern? 

With <throw>, one can associate one faultName with more than one faultMessageTypes already.  Then, what does this universal-uniqueness restriction buy us in terms of <catch> construct usage? 

Changes: 21 Jul 2006 - new issue

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