How To Fix C+892 - Cannot change base unit of measure if ML is active

SAP Error Message - Details

• Message type: E = Error

• Message class: C+ -

• Message number: 892

• Message text: Cannot change base unit of measure if ML is active

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message C+892 - Cannot change base unit of measure if ML is active ?

  The SAP error message C+892, which states "Cannot change base unit of measure if ML is active," typically occurs when you attempt to change the base unit of measure for a material that is set up for Material Ledger (ML) functionality. The Material Ledger is used for actual costing and provides more detailed inventory valuation and tracking.
  Cause:
  The error arises because the Material Ledger is designed to track inventory and costs in a specific way, and changing the base unit of measure after ML has been activated can lead to inconsistencies in the data. The base unit of measure is a fundamental attribute of a material, and once ML is active, it locks certain fields to maintain data integrity.
  Solution:
  To resolve this error, you have a few options:
  
  
  Deactivate Material Ledger: If you do not need the Material Ledger functionality for the material, you can deactivate it. However, this is a significant change and may not be advisable if you have already been using ML for that material.
  
  
  Create a New Material: If changing the base unit of measure is essential, consider creating a new material with the desired base unit of measure. You can then transfer stock and data from the old material to the new one.
  
  
  Consult with SAP Support: If you believe that you need to change the base unit of measure for a material with ML active, it may be best to consult with SAP support or your SAP functional consultant. They can provide guidance based on your specific configuration and business requirements.
  
  
  Check Configuration: Review the configuration settings related to the Material Ledger and the material master data. Ensure that the settings align with your business processes and requirements.
  
  
  Related Information:
  
  Material Master Data: The base unit of measure is defined in the material master record. You can view and edit this data in transaction MM02 (Change Material).
  Material Ledger Configuration: The Material Ledger settings can be found in the configuration menu under Logistics > Materials Management > Material Master > Material Ledger.
  Documentation: Refer to SAP Help documentation for more detailed information on Material Ledger and material master data management.
  
  Best Practices:
  
  Always back up your data before making significant changes to material master records.
  Test changes in a development or quality assurance environment before applying them in production.
  Ensure that all stakeholders are informed about changes to material master data, especially if it affects inventory valuation or reporting.
  
  By following these guidelines, you can effectively manage the error and maintain the integrity of your material data in SAP.