How To Fix CBGL00502 - Hierarchy explosion is not possible; alt. unit of measure does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CBGL00 - GLM: Standard Messages

• Message number: 502

• Message text: Hierarchy explosion is not possible; alt. unit of measure does not exist

What causes this issue?

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

System Response

How to fix this error?

Enter the required packaging unit in the material master of the material
as an <DS:GLOS.3526C0A4AFAB52B9E10000009B38F974>alternative unit of
measure</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CBGL00502 - Hierarchy explosion is not possible; alt. unit of measure does not exist ?

  The SAP error message CBGL00502 indicates that there is an issue with the hierarchy explosion process in the context of a bill of materials (BOM) or a similar structure where alternative units of measure (UoM) are involved. This error typically arises when the system cannot find a valid alternative unit of measure for the materials involved in the hierarchy.
  Cause:
  
  Missing Alternative Unit of Measure: The primary cause of this error is that the alternative unit of measure for a material is not defined in the material master data.
  Incorrect Configuration: The configuration settings for the material or the BOM may not be set up correctly, leading to issues in the hierarchy explosion process.
  Data Inconsistency: There may be inconsistencies in the data related to the materials, such as missing or incorrect entries in the material master or BOM.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master (transaction code MM03) and check if the alternative unit of measure is defined for the relevant material.
  If it is missing, you can add it by using transaction code MM02 to modify the material master and include the necessary alternative unit of measure.
  
  
  
  Review BOM Settings:
  
  Check the BOM associated with the material to ensure that it is correctly configured and that all components have the necessary units of measure defined.
  Use transaction code CS03 to display the BOM and verify the details.
  
  
  
  Configuration Settings:
  
  Ensure that the configuration settings for the relevant materials and BOMs are correct. This may involve checking the settings in the customizing (transaction code SPRO) related to material management and BOM processing.
  
  
  
  Data Consistency Check:
  
  Perform a data consistency check to identify any discrepancies in the material master or BOM data. This can help in identifying any missing or incorrect entries.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for additional guidance on handling alternative units of measure and BOM configurations.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  CS03: Display BOM
  SPRO: Customizing settings
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to view and modify material master data and BOMs.
  
  
  By following these steps, you should be able to resolve the error CBGL00502 and successfully perform the hierarchy explosion process. If the issue persists, consider reaching out to your SAP support team for further assistance.