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Ïã¸ÛÁùºÏ²Ê¿ª½±/TS 20022-5:2004 describes the activities of "Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 reverse engineering" from the point of view of the user who wants to verify that the business functionality, covered by his own Industry Message Set, is covered by Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 compliant Business Transactions and Message Sets. It is not an attempt to define a"methodology" for reverse engineering.

Ïã¸ÛÁùºÏ²Ê¿ª½±/TS 20022-5:2004 describes the following set of required activities:

• extract relevant information from existing Industry Message Sets and compare it to the related information in the Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 Repository;
• use the results of this comparison for the development of Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 compliant Business Transactions and Message Sets;
• submit the resulting update requests to the Registration Authority;
• prepare the migration to the Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 compliant Business Transactions and Message Sets.

The main objectives of the "Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 reverse engineering" are as follows:

• capture the industry knowledge covered by existing Industry Message Sets;
• build upon former standardization efforts in the industry when building Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 compliant Business Transactions and Message Sets;
• ensure that the resulting Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 compliant Business Transactions and Message Sets fully cover the business scope of existing Industry Message Sets;
• maximize interoperability between existing Industry Message Sets and Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 compliant Business Transactions and Message Sets;
• support the migration from existing Industry Message Sets to Ïã¸ÛÁùºÏ²Ê¿ª½± 20022 compliant Business Transactions and Message Sets.

Ïã¸ÛÁùºÏ²Ê¿ª½±/TS 20022-5:2004 gives some specific terms that are used in the document. It then describes the major activities that will be conducted during reverse engineering and also describes at a high level the resulting deliverables. A detailed workflow is presented, explaining all activities, inputs and outputs. Finally, a detailed description of the Convergence Documentation is given in an appendix.