ORA-30938: No prefix defined for namespace

admin

ORA-30938: No prefix defined for namespace 'string' (particle string)
Cause: An XML namespacemapping (xmlns:<prefix>=<namespace URL>) must
be defined for each particle (element or attribute) stored in anschema-constrained
XMLType document.
Action: Add an xmlnsattribute definition (attribute name="xmlns:prefix" and
value="namespace URL") to the current XMLType document. The safestplace to
add this attribute is in the root node of the document to ensure that themapping
will be in scope.