Name | Variations | Error Codes | Remarks
--- | --- | --- | ---
EDGAR Filer Manual v41 6.18.1 page 6-58 | 2 | Custom-Element-Has-Reference | REMARK: A company extension also cannot remove or change references in standard taxonomies (this is a technical consequence of the rule prohibiting URI fragments other than shorthand xpointers). REMARK: This only applies to company extension linkbases. If there were a reference linkbase in edgartaxonomies.xml, then it would be included in a 'good' test variation.
EDGAR Filer Manual v41 6.18.2 page 6-59 | 1 | Standard-Element-Has-Reference | REMARK: 6.19 reads "A company extension also cannot remove or change references in standard taxonomies (this is a technical consequence of the rule prohibiting URI fragments other than shorthand xpointers)." but this does not explicitly say the obvious point that you can't ADD authoritative references, either.