A record in an OTD may be marked as deleted; however, it shall be retained in an OTD so that catalogues and identification guides that use the term can be resolved. A record for a concept shall not be deleted or marked as deleted. It may be marked as superseded by another concept.
Once a record is added to an OTD the content of the record shall not be changed and the assigned identifier shall not be reused. If any changes are needed, a new record shall be added, the old record marked as deleted and superseded by the new record.
NOTE 1 The mechanism for marking a terminological item as deleted or superseded is described in ISO/TS 22745-10.
NOTE 2 An example illustrating the management of an OTD when a change is needed is given in Annex D.
Different consensus organizations may have different views as to the term acceptability rating of a given term. Therefore, such information shall not be included in an OTD. It may be included in identification guides.
NOTE 3 The following ratings are common: preferred, admitted, deprecated.