How To Fix SOI553 - Changing index &1-&2 from non unique to unique is not supported

SOI553 - Overview

• Message type: E = Error

• Message class: SOI - Safe Online Import/Upgrade Messages

• Message number: 553

• Message text: Changing index &1-&2 from non unique to unique is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SOI553 - Changing index &1-&2 from non unique to unique is not supported ?

  The SAP error message SOI553 indicates that there is an attempt to change an index from a non-unique index to a unique index in a database table, which is not supported by the system. This typically occurs when you are trying to modify the properties of an existing index in a way that violates the constraints of the database.
  
  Cause:
  
  Index Type Change: The error arises when you attempt to change an existing non-unique index to a unique index. A non-unique index allows duplicate entries, while a unique index does not.
  Existing Data Violations: If the table already contains duplicate entries for the fields that you want to enforce uniqueness on, the system will not allow the change because it would violate the uniqueness constraint.
  Database Constraints: The underlying database system (like Oracle, SQL Server, etc.) enforces these rules, and SAP is simply reflecting that enforcement.
  
  
  Solution:
  
  
  Check Existing Data: Before changing the index, check the