How To Fix UPC532 - Reference data is not unique

UPC532 - Overview

• Message type: E = Error

• Message class: UPC - Planning: General Error Messages

• Message number: 532

• Message text: Reference data is not unique

What causes this issue?

Reference data is read for the derivation. Characteristic combinations
of source fields occur several times in the reference data.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the reference data.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

UPC532 - Details

• The SAP error message UPC532, which states "Reference data is not unique," typically occurs in the context of SAP Advanced Planning and Optimization (APO) or SAP Integrated Business Planning (IBP). This error indicates that the system has encountered multiple entries for a reference data object that should be unique, leading to ambiguity in processing.
  Causes:
  
  Duplicate Entries: The most common cause is the presence of duplicate entries in the master data or reference data tables. This could be due to incorrect data uploads, manual entry errors, or issues during data migration.
  
  Configuration Issues: Incorrect configuration settings in the planning area or master data settings can lead to non-unique references.
  Data Model Issues: If the data model is not properly defined or if there are inconsistencies in the data relationships, it can result in non-unique references.
  Versioning Problems: In some cases, different versions of the same data object may exist, causing conflicts.
  
  Solutions:
  
  Identify Duplicates: Use transaction codes