How to fix the Oracle error ORA-19250: XQTY0030 – too many values to validate expression?

In this post, you’ll learn more about the Oracle ErrorORA-19250: XQTY0030 – too many values to validate expression with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19250: XQTY0030 – too many values to validate expression

Reason for the Error ORA-19250: XQTY0030 – too many values to validate expression

The argument of a validate expression returned more than one element or document node.

How to fix the Error ORA-19250: XQTY0030 – too many values to validate expression ?

You can fix this error in Oracle by following the below steps

Fix the argument of the validate expression to return a single element or document node.