How to fix the Oracle error LPX-00107: element “~S” has multiple declarations?

In this post, you’ll learn more about the Oracle ErrorLPX-00107: element “~S” has multiple declarations with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

LPX-00107: element “~S” has multiple declarations

Reason for the Error LPX-00107: element “~S” has multiple declarations

Cause: Validity Constraint 3.2 failed: “No element type may be declared more than once.”

How to fix the Error LPX-00107: element “~S” has multiple declarations ?

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

Action: Correct the DTD.