How To Fix 12166 - Reference classif. - &1 is not adopted

SAP Error Message - Details

• Message type: E = Error

• Message class: 12 - Herstelldatum/Mindesthaltbarkeitsdatum/Chargen

• Message number: 166

• Message text: Reference classif. - &1 is not adopted

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 12166 - Reference classif. - &1 is not adopted ?

  The SAP error message "12166 Reference classif. - &1 is not adopted" typically occurs in the context of classification in SAP, particularly when dealing with material master data or classification systems. This error indicates that a reference classification (often a class or characteristic) is not properly adopted or recognized in the current context.
  Cause:
  
  Missing Adoption: The reference classification (indicated by &1) has not been adopted in the current classification system or for the specific object you are working with.
  Inconsistent Data: There may be inconsistencies in the classification data, such as missing links between classes and characteristics.
  Authorization Issues: The user may not have the necessary authorizations to access or adopt the reference classification.
  Configuration Issues: The classification system may not be properly configured, leading to issues in recognizing reference classifications.
  
  Solution:
  
  
  Adopt the Reference Classification:
  
  Navigate to the classification system and ensure that the reference classification is adopted for the relevant object (e.g., material, equipment).
  Use transaction codes like CL02 (Change Class) or CL01 (Create Class) to check and adopt the reference classification.
  
  
  
  Check Data Consistency:
  
  Review the classification data for any inconsistencies. Ensure that all necessary classes and characteristics are correctly linked.
  Use transaction CL24N (Display Class) to check the details of the class and its characteristics.
  
  
  
  Authorization Check:
  
  Verify that the user has the necessary authorizations to access and modify classification data. This can be done by checking the user roles and authorizations in transaction SU01 (User Maintenance).
  
  
  
  Configuration Review:
  
  If the issue persists, review the configuration of the classification system. Ensure that all necessary settings are in place for the reference classifications to be recognized.
  Consult with your SAP Basis or configuration team if you suspect a configuration issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed information on classification and error handling.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01, CL02, CL03 (Display Class), CL24N, and CL30 (Class Overview).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP support team or consult with SAP directly for further assistance.