Market Domain Data (MDD) is a set of values for a group of attributes that underpin the efficient transfer of data between market participants within a de-regulated market. This concept ensures that market participants can operate within the market without ambiguity concerning meaning and scope of the messages that must be passed between them.

The objective of this Indefine service is to ensure that all changes to MDD are made in an auditable and controlled manner with due consultation with affected parties.

The Indefine service includes:

• Publication of baseline documentation to all Market participants in a format appropriate to the needs of the industry. This may be either by a controlled incremental/decremental process or a complete refresh as appropriate.
• Provision of a central repository containing all the current MDD values and the meanings associated with those values. Where appropriate this shall include any constraints upon valid combinations of data.
• Development of procedures to allow MDD to be maintained.
• Development and maintenance of a Change Request Timetable and agreement of service levels appropriate for the volatility of the MDD data.
• Provision of a review process forum.
• Development of clearly defined authorisation processes.
• Management of change control co-ordination processes.
• Procedures to specify how MDD change requests should be raised and notified to affected parties.
• Development of MDD Compliance Disputes Procedures.
• Provision of MDD compliance utilities.

The Indefine methodology will allow complete control of data quality within green field scenarios. As importantly, the principles are entirely suitable for application within existing environments where there are issues regarding the quality of data.