In this post, you’ll learn more about the Oracle ErrorORA-31401: change source string is not an existing change source with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-31401: change source string is not an existing change source
Reason for the Error ORA-31401: change source string is not an existing change source
The caller did not use the name of an existing change source. The name given does not match the name of any existing change source.
How to fix the Error ORA-31401: change source string is not an existing change source ?
You can fix this error in Oracle by following the below steps
Check the spelling of the change source name. Choose an existing change source.