Oracle Message ORA-19127 - XQST0067: XQST0067: A static error is raised if a Prolog contains more than one construction declaration

ERRORXQST0067: XQST0067: A static error is raised if a Prolog contains more than one construction declaration
CAUSEAn error occurred during the processing of the XQuery expression.
ACTIONCheck the detailed error message for the possible causes.