Version 1: Release Note 28 November 2014



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Message Identifier


A Message Identifier shall be the concatenation:

Business Originator ID || Business Target ID || CRA Flag || Originator Counter

All Messages shall include a Message Identifier which shall be:


  • constructed according to the requirements of this Section 4.3.1; and

  • incorporated in the Message according to the requirements of Section 7.
        1. Additional Counters and Identifiers


The following attributes shall be incorporated in Commands where (1) the Business Originator ID is set to be that of the Access Control Broker and (2) the Message Code is listed in the ‘Use Case reference’ worksheet of the Mapping Table as ‘Supplementary Remote Party Data required’:

  • Supplementary Remote Party ID, which shall be the Entity Identifier of the Remote Party requesting the creation of the Command by the Access Control Broker; and

  • Supplementary Remote Party Counter, which shall be an octet string of length 8.

All Responses to such Commands shall incorporate:

  • the same Supplementary Remote Party ID and Supplementary Remote Party Counter as the Command; and

  • for those marked as ‘Supplementary Originator Counter required in Response’ in the ‘Use Case reference’ worksheet of the Mapping Table’, a Supplementary Originator Counter which shall be generated by the Device, shall be an octet string of length 8 whose contents shall be set and read as an unsigned 64-bit integer. The Device shall ensure that the value it generates is strictly numerically greater than any previous Originator Counter value it has placed in any previous Message it has generated, and strictly numerically greater than any Supplementary Originator Counter it has placed in any previous Message it has generated.

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