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  • Formatting was changed. - Documentation shall describe any processes used for changes to such identifiers.


SP has few instances causing the need for a change to an identifier. The examples below are some exceptions.

  • In the case of a collision, the URI that was generated will be appended with an underscore (_) and a sequential number beginning with one. This number will increment for each duplicate URI.


a systematic process for changing identifiers. Such changes are rare. The most common situation involves the replacement of an article with a new version of the same article at the Provider's request. The new copy of an article will supersede the old and claim the original identifier. The old copy of the article will retain the original identifier with “_old1” added onto the end. If another newer copy replaces the previous one, the previous will retain the identifier with “_old2” added


Please see document below for further details.


Digital Preservation Policy Librarian