How To Fix CH146 - Material type cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: CH - CAD/PP integration messages

• Message number: 146

• Message text: Material type cannot be changed

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CH146 - Material type cannot be changed ?

  The SAP error message CH146 ("Material type cannot be changed") typically occurs when you attempt to change the material type of an existing material in the SAP system. This is a restriction in SAP because the material type is a fundamental attribute that defines various characteristics and behaviors of the material, including its valuation, procurement, and inventory management processes.
  Cause:
  
  Material Type Restrictions: The material type is linked to various configurations and settings in the system. Changing it could lead to inconsistencies in data and processes.
  Existing Transactions: If there are existing transactions (like purchase orders, sales orders, stock movements, etc.) associated with the material, the system will prevent changes to the material type to maintain data integrity.
  Material Master Data: The material master data is structured in a way that certain fields are locked once the material is created, especially the material type.
  
  Solution:
  
  Create a New Material: Instead of changing the material type of an existing material, create a new material with the desired material type. You can then transfer any necessary data from the old material to the new one.
  Use Material Type Change Functionality: In some cases, if the material is not yet used in any transactions, you might be able to use specific SAP transactions or custom programs to change the material type. However, this is not common and should be approached with caution.
  Consult with SAP Support: If you believe that the change is necessary and you have a valid business case, consult with your SAP support team or SAP consultants. They may provide guidance or alternative solutions based on your specific configuration and requirements.
  
  Related Information:
  
  Material Master Data: Understanding the structure and implications of material master data in SAP is crucial. Familiarize yourself with the different views and fields associated with material types.
  Transaction Codes: Common transaction codes related to material management include:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  
  
  SAP Notes and Documentation: Check SAP Notes for any specific guidance or updates related to material type changes. SAP Help Portal can also provide detailed documentation on material management processes.
  
  Best Practices:
  
  Always perform a thorough analysis before attempting to change material types.
  Ensure that all relevant stakeholders are informed and involved in the decision-making process.
  Maintain proper documentation of any changes made to material master data for audit and compliance purposes.
  
  By following these guidelines, you can effectively manage the challenges associated with the CH146 error message in SAP.