How to fix the Oracle error ORA-23475: key column string must be sent and compared?

In this post, you’ll learn more about the Oracle ErrorORA-23475: key column string must be sent and compared with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-23475: key column string must be sent and compared

Reason for the Error ORA-23475: key column string must be sent and compared

The specified column is a key column and must be sent and compared during replication propagation.

How to fix the Error ORA-23475: key column string must be sent and compared ?

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

Make sure every key column is sent and compared.