Two specs are defining error reports for the CSW services:

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== ''OGC™ Catalogue Services — ebRIM (ISO/TS 15000-3) profile of CSW'' ==

Reference number of this OGC™ document: OGC 05 025r3


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== ''OGC® Cataloguing of ISO Metadata (CIM) Using the ebRIM profile of CS-W'' ==
Reference number of this OGC® document: OGC 07-038