How to fix the Oracle error XOQ-01989: Level “string” is not uniquely mapped.?

In this post, you’ll learn more about the Oracle ErrorXOQ-01989: Level “string” is not uniquely mapped. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

XOQ-01989: Level “string” is not uniquely mapped.

Reason for the Error XOQ-01989: Level “string” is not uniquely mapped.

Cause: More than one level was mapped to the same expression. If a dimension has materialized views, it cannot have more than one level mapped to the same expression.

How to fix the Error XOQ-01989: Level “string” is not uniquely mapped. ?

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

Action: Uniquely map all levels or create the dimension without materialized views.