How To Fix RS_ADSO_MODEL109 - '&1': 'Characteristic as key figure' is not allowed on key fields

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_ADSO_MODEL - Messages related to the Datastore Object Backend

• Message number: 109

• Message text: '&1': 'Characteristic as key figure' is not allowed on key fields

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_ADSO_MODEL109 - '&1': 'Characteristic as key figure' is not allowed on key fields ?

  The SAP error message RS_ADSO_MODEL109 indicates that there is an issue with the configuration of an Advanced DataStore Object (ADSO) in SAP BW/4HANA or SAP BW on HANA. Specifically, the error message states that a characteristic is being used as a key figure, which is not allowed for key fields in the ADSO model.
  Cause:
  The error occurs when you attempt to define a characteristic (which is typically used for dimensions or attributes) as a key figure (which is used for measures) in the context of key fields in an ADSO. Key fields in an ADSO are expected to be either characteristics or key figures, but not both.
  Solution:
  To resolve this error, you need to check the configuration of your ADSO and ensure that the key fields are correctly defined. Here are the steps you can take:
  
  
  Review the ADSO Definition:
  
  Go to the ADSO definition in the SAP BW modeling tools.
  Check the key fields section and identify which field is incorrectly defined as a key figure.
  
  
  
  Correct the Field Type:
  
  If a characteristic is mistakenly defined as a key figure, change its type back to a characteristic.
  Conversely, if a key figure is incorrectly defined, ensure it is set as a key figure.
  
  
  
  Adjust the Data Model:
  
  If necessary, adjust your data model to ensure that the key fields are appropriately defined according to your business requirements.
  
  
  
  Re-activate the ADSO:
  
  After making the necessary changes, re-activate the ADSO to apply the new configuration.
  
  
  
  Test the Changes:
  
  Run a data load or query to ensure that the error has been resolved and that the ADSO behaves as expected.
  
  
  
  Related Information:
  
  Key Fields in ADSO: Key fields are used to uniquely identify records in the ADSO. They can be a combination of characteristics and key figures, but the rules must be followed.
  Characteristics vs. Key Figures: Characteristics are typically used for descriptive attributes (e.g., customer name, product ID), while key figures are numerical values that can be aggregated (e.g., sales amount, quantity sold).
  SAP Documentation: For more detailed information, refer to the official SAP documentation on Advanced DataStore Objects and data modeling best practices.
  
  By following these steps, you should be able to resolve the RS_ADSO_MODEL109 error and ensure that your ADSO is correctly configured.