How To Fix V1645 - Material group hierarchy level &1 has not been created (class &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: V1 - Verkaufsbelegbearbeitung

• Message number: 645

• Message text: Material group hierarchy level &1 has not been created (class &2)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message V1645 - Material group hierarchy level &1 has not been created (class &2) ?

  The SAP error message V1645 indicates that a material group hierarchy level has not been created for a specific class. This error typically arises in the context of material management and classification in SAP, particularly when dealing with material master data.
  Cause:
  The error occurs when:
  
  A material group hierarchy level is referenced in a transaction or process, but it has not been defined in the system.
  The material class specified in the error message does not have the necessary hierarchy levels set up.
  There may be inconsistencies in the configuration of material groups or classes.
  
  Solution:
  To resolve the V1645 error, you can follow these steps:
  
  
  Check Material Group Hierarchy:
  
  Go to the transaction code OMD1 (or the relevant transaction for your version) to check the material group hierarchy.
  Ensure that the hierarchy level mentioned in the error message is created and properly configured.
  
  
  
  Create Missing Hierarchy Level:
  
  If the hierarchy level does not exist, you will need to create it. This can typically be done in the same transaction where you checked the hierarchy.
  Define the necessary attributes and relationships for the new hierarchy level.
  
  
  
  Verify Material Class Configuration:
  
  Use transaction code CL02 to check the class configuration for the material class mentioned in the error.
  Ensure that the class is correctly set up to include the required characteristics and that it is linked to the appropriate material group hierarchy.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to create or modify material group hierarchies and classes.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for specific details on configuring material groups and classes.
  
  
  
  Testing:
  
  After making the necessary changes, test the transaction or process again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  OMD1: Maintain Material Group Hierarchy
  CL02: Change Class
  MM01: Create Material
  MM02: Change Material
  
  
  
  SAP Notes:
  
  Check SAP Notes for any known issues or patches related to this error message. You can search for the error message number or related keywords in the SAP Support Portal.
  
  
  
  Documentation:
  
  Refer to the SAP Help Portal for detailed documentation on material management and classification.
  
  
  
  By following these steps, you should be able to identify and resolve the issue causing the V1645 error in your SAP system.