Please change section 10 as following: P. 49, Line 1993-1994. It is highly RECOMMENDED that Reliable Messaging be used when a MessageOrder element is present. V Reliable Messaging MUST be used when a MessageOrder element is present. P. 49, Line 1997. SHOULD V MUST P. 49, Line 2009. The MessageOrder element MUST be used with the duplicateElimination attribute set to true. V The MessageOrder element MUST be used with delivery behavior of Once-and-Only-Once. The Once-and-Only-Once delivery behavior means that duplicateElimination set to true and AckRequested element appears in messages, or duplicateElimination set to true and Acknowledgement element appears in messages. P. 49, Line 2021. only when duplicateElimination is true. V only when delivery behavior is Once-and-Only-Once. P. 49, Line 2023. If duplicateElimination is not true V If delivery behavior is not Once-and-Only-Once P. 49, 2025-2026 that have a duplicateElimination attribute with a value of true V that have delivery behavior is Once-and-Only-Once P. 50, Line 2044 and 2046. when duplicateElimination has a value of true V when delivery behavior is Once-and-Only-Once P. 50, Line 2050 and 2052. When duplicateElimination is true V When delivery behavior is Once-and-Only-Once Because guarantee of message order can be realized only when delivery behavior is Once-and-Only-Once. Actually in the Message Service specification V1.0, guarantee of message order can be specified only when delivery behavior is Once-and-Only-Once. Please consider following case: MessageOrderSemantics: Guarantee Delivery behavior: At-Most-Once (duplicateElimination is true and AckRequired is not used). +----------+ ---- Message (SN=1)---> receiving ---- Message (SN=2)---> MSH ---- Message (SN=4)---> +----------+ In this case, receiving MSH is not sure that the Message of SN 3 will reach after that. It might never reach forever. It means that receiving MSH can't decide that when the Message of SN 4 should be passed to application. Regards, -- SHIMAMURA Masayoshi <
shima.masa@jp.fujitsu.com> TEL:+81-45-476-4590(ext.7128-4241) FAX:+81-45-476-4726(ext.7128-6783) Planning Dep., Strategic Planning Div., Software Group, FUJITSU LIMITED