How To Fix KWUI020 - Unique attribute evaluated more than once

KWUI020 - Overview

• Message type: E = Error

• Message class: KWUI - Messages for KW UI Controls and Dialogs

• Message number: 020

• Message text: Unique attribute evaluated more than once

Self-Explanatory Message

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KWUI020 - Details

• The SAP error message KWUI020, which states "Unique attribute evaluated more than once," typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when there is an issue with the uniqueness of attributes in a data model or query. This error indicates that a unique attribute is being evaluated multiple times, which can lead to ambiguity in the data retrieval process.
  
  Cause:
  
  Duplicate Attributes: The error often arises when a unique attribute is included in multiple places in a query or data model, leading to confusion about which instance of the attribute should be used.
  Incorrect Data Model Design: The data model may not be designed correctly, causing the same attribute to be evaluated in different contexts.
  Query Design Issues: If a query is constructed in a way that it references the same unique attribute multiple times, it can trigger this error.
  
  
  Solution:
  
  Review Query Design: Check the query to ensure that unique