Ron, <Ron>If they concur, then perhaps they will support a change to the CCTS that representatives of the aerospace industry suggested a few years ago while the CCTS was in its earlier draft form. The recommended change would not mandate but simply allow for a "permanent" structured ID to be assigned rather than the current "temporary" 6 digit ID. The current wording in Section 5.3.1 states "Step 6. Assign a Temporary Identifier to the new item in the form of a 6 digit alphanumeric string, chosen at the discretion of the user." The suggested new wording in Section 5.3.1 would state "Step 6. Assign an identifier to the new item in the form of a alphanumeric string, chosen at the discretion of the user."</Ron> Please submit this change request. It is not TBG17 who decides upon it, but the CCTS team. The UID identifier is meant to be a pure identifier. Some even want to change it into a UUID (the lengthy numbers you find in e.g. MS-Windows registries). It is temporary upon submission because it may change after harmonising (when the submitted CC may have been combined with other submissions). I think it would already serve your goal if a UDEF GUID would be added in the registries that store Core Components. Fred
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