How To Fix GR102 - Higher-level characteristic & for characteristic & not defined uniquely

SAP Error Message - Details

• Message type: E = Error

• Message class: GR - Report Writer

• Message number: 102

• Message text: Higher-level characteristic & for characteristic & not defined uniquely

What causes this issue?

With hierarchically structured data, the values of the higher-level
characteristics must be known in order for lower-level characteristics
to be clearly specified. If the system does not offer these
higher-level characteristics to the user as possible entries, they must
be defined uniquely in the report group.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GR102 - Higher-level characteristic & for characteristic & not defined uniquely ?

  The SAP error message GR102 ("Higher-level characteristic & for characteristic & not defined uniquely") typically occurs in the context of SAP's classification system, particularly when dealing with characteristics and classes in the material master or when creating or changing classification data.
  Cause:
  This error indicates that there is a problem with the way characteristics are defined in relation to each other. Specifically, it means that the higher-level characteristic (the one that is supposed to define or categorize the lower-level characteristic) does not have a unique value for the lower-level characteristic. This can happen in the following scenarios:
  
  Non-unique Assignment: The higher-level characteristic is assigned multiple values for the same lower-level characteristic, leading to ambiguity.
  Missing Definition: The higher-level characteristic may not be defined properly in the classification system, or it may not be linked correctly to the lower-level characteristic.
  Incorrect Configuration: There may be an issue with the configuration of the classification system, such as incorrect settings in the class or characteristics.
  
  Solution:
  To resolve the GR102 error, you can take the following steps:
  
  
  Check Characteristic Definitions:
  
  Go to the transaction code CT04 (Change Characteristic) and verify the definitions of both the higher-level and lower-level characteristics.
  Ensure that the higher-level characteristic has a unique value for the lower-level characteristic.
  
  
  
  Review Class Assignments:
  
  Use transaction code CL02 (Change Class) to check the class assignments for the characteristics.
  Ensure that the characteristics are assigned correctly and that there are no conflicting definitions.
  
  
  
  Adjust Class Hierarchy:
  
  If necessary, adjust the class hierarchy to ensure that the higher-level characteristic is correctly defined and linked to the lower-level characteristic.
  
  
  
  Check for Duplicates:
  
  Look for any duplicate entries in the classification data that might be causing the ambiguity. Remove or correct any duplicates.
  
  
  
  Test Changes:
  
  After making the necessary adjustments, test the changes by trying to create or modify the classification data again to see if the error persists.
  
  
  
  Consult Documentation:
  
  If the issue continues, consult SAP documentation or reach out to your SAP support team for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), CT04 (Change Characteristic), and CL03 (Display Class).
  SAP Notes: Check SAP Notes for any known issues or patches related to classification errors.
  Training: Consider training on SAP classification and characteristics management if this is a recurring issue in your organization.
  
  By following these steps, you should be able to identify and resolve the cause of the GR102 error in SAP.