How To Fix DT563 - &-&: Full text index cannot be unique

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 563

• Message text: &-&: Full text index cannot be unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT563 - &-&: Full text index cannot be unique ?

  The SAP error message DT563, which states "Full text index cannot be unique," typically occurs when there is an attempt to create a full-text index on a database table where the index is defined as unique, but the nature of full-text indexing does not support uniqueness.
  Cause:
  
  Full-Text Index Definition: Full-text indexes are designed to allow efficient searching of text data. They are not meant to enforce uniqueness on the indexed data. If you attempt to create a full-text index on a column that is defined as unique, SAP will raise this error.
  Database Constraints: The underlying database (e.g., HANA, Oracle, etc.) may have constraints that prevent the creation of a unique full-text index.
  
  Solution:
  
  Review Index Definition: Check the definition of the full-text index you are trying to create. Ensure that it is not marked as unique. You may need to modify the index definition to remove the uniqueness constraint.
  Modify Table Structure: If the table structure requires a unique constraint, consider whether a full-text index is necessary for that column. If it is, you may need to redesign your data model.
  Use Non-Unique Index: Create a non-unique full-text index on the relevant column(s) instead of a unique one. This will allow you to perform full-text searches without enforcing uniqueness.
  Consult Documentation: Refer to the SAP documentation or the documentation for your specific database system for guidelines on creating full-text indexes and understanding their limitations.
  
  Related Information:
  
  Full-Text Search: Full-text search capabilities allow users to search for words or phrases within text fields efficiently. This is particularly useful for large datasets with textual content.
  Database-Specific Behavior: Different databases may have different rules regarding full-text indexing. Always check the specific database documentation for details on how full-text indexes are implemented.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to full-text indexing and this specific error message.
  
  If you continue to encounter issues, consider reaching out to your SAP support team or consulting with a database administrator for further assistance.