Oracle® Database 11g / 12c / 18c error codes ORA-53008: The tag value is not a registered schema.

ORA-53008: The tag value is not a registered schema.

Oracle Error Code: ORA-53008

Cause: The schema URL specified by the value of the tag was not a registered Oracle XML DB schema.

Action: Specify a registered schema URL value. See the ALL_XML_SCHEMAS view for a list of registered schemas. See the Oracle XML DB Developers''s Guide for information about registering schemas. See the Oracle Multimedia documentation for information about the mapping document schema (ordcmmp.xsd).