How To Fix NAA799 - Interval scale type cannot be changed at a later date

SAP Error Message - Details

• Message type: E = Error

• Message class: NAA - Subsequent settlement (Purchasing)

• Message number: 799

• Message text: Interval scale type cannot be changed at a later date

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message NAA799 - Interval scale type cannot be changed at a later date ?

  The SAP error message NAA799, which states "Interval scale type cannot be changed at a later date," typically occurs in the context of SAP Analytics or SAP Business Warehouse (BW) when dealing with characteristics or key figures that have been defined with a specific scale type. This error indicates that the scale type of a characteristic or key figure, once set, cannot be modified after it has been used in data processing or reporting.
  Cause:
  
  Scale Type Definition: In SAP, characteristics and key figures can be defined with different scale types (e.g., interval, ratio, nominal). Once a characteristic is created and used in a data model, changing its scale type can lead to inconsistencies in data interpretation and reporting.
  Data Integrity: The system enforces this restriction to maintain data integrity and ensure that existing reports and queries that rely on the original scale type continue to function correctly.
  
  Solution:
  
  Create a New Characteristic/Key Figure: If you need to change the scale type, the recommended approach is to create a new characteristic or key figure with the desired scale type. You can then migrate the data from the old characteristic to the new one if necessary.
  Adjust Data Models: After creating the new characteristic or key figure, you may need to adjust any data models, queries, or reports that reference the old characteristic to point to the new one.
  Consult Documentation: Review SAP documentation or consult with your SAP administrator or functional consultant for best practices on handling characteristics and key figures.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions related to this error message.
  Data Modeling Guidelines: Familiarize yourself with SAP's guidelines on data modeling, especially regarding characteristics and key figures, to avoid similar issues in the future.
  Testing: Always test changes in a development or sandbox environment before applying them to production to ensure that they do not disrupt existing functionality.
  
  If you continue to encounter issues or need further assistance, consider reaching out to SAP support or your organization's SAP technical team for more tailored guidance.