How To Fix MR026 - No base material groups exist for higher-level material group &

SAP Error Message - Details

• Message type: E = Error

• Message class: MR - Stock overview for generic materials

• Message number: 026

• Message text: No base material groups exist for higher-level material group &

What causes this issue?

The following two causes are possible:
You have entered a material group to which no base material groups are
assigned in the material group hierarchy.
The corresponding master data is missing for the base material groups
in the hierarchy. This case poses a serious database inconsistency.

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?

Cause 1:
Maintain the missing base material groups in the material group
hierarchy.
Cause 2:
Notify your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MR026 - No base material groups exist for higher-level material group & ?

  The SAP error message MR026 indicates that there are no base material groups defined for the specified higher-level material group. This error typically occurs in the context of material management, particularly when dealing with material group hierarchies in SAP.
  Cause:
  
  Missing Configuration: The higher-level material group has not been properly configured with any base material groups in the system.
  Data Entry Error: There may be a typographical error in the material group code being referenced.
  Master Data Issues: The material master data may not be correctly set up, leading to the absence of associated base material groups.
  Hierarchy Structure: The hierarchy structure for material groups may not be fully defined or may have been altered without updating the necessary links.
  
  Solution:
  
  
  Check Material Group Configuration:
  
  Go to the configuration settings for material groups in SAP (Transaction Code: OMSA or SPRO).
  Verify that the higher-level material group is correctly defined and that it has associated base material groups.
  
  
  
  Define Base Material Groups:
  
  If no base material groups exist, you will need to create them. This can be done in the same configuration area where you manage material groups.
  Ensure that the base material groups are correctly linked to the higher-level material group.
  
  
  
  Review Material Master Data:
  
  Check the material master records associated with the higher-level material group to ensure they are correctly assigned to the appropriate material groups.
  Use Transaction Code: MM03 to view the material master data.
  
  
  
  Correct Data Entry:
  
  Double-check the material group code you are using to ensure it is correct and exists in the system.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on material group configuration and hierarchy management.
  
  
  
  Testing:
  
  After making the necessary changes, test the functionality again to ensure that the error message MR026 no longer appears.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  OMSA: Maintain Material Groups
  SPRO: Customizing Implementation Guide
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to material group configuration.
  
  
  User Roles: Ensure that you have the necessary authorizations to make changes to material group configurations.
  
  
  By following these steps, you should be able to resolve the MR026 error and ensure that your material group hierarchy is correctly set up in SAP.