How to fix the Oracle error LPX-00122: undefined ID “~S” in IDREF?

In this post, you’ll learn more about the Oracle ErrorLPX-00122: undefined ID “~S” in IDREF with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

LPX-00122: undefined ID “~S” in IDREF

Reason for the Error LPX-00122: undefined ID “~S” in IDREF

Cause: Validity Constraint 3.3.1 failed: “A name must not appear more than once in an XML document as a value of this type; i.e., ID values must uniquely identify the elements which bear them.”

How to fix the Error LPX-00122: undefined ID “~S” in IDREF ?

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

Action: Correct the document.