How To Fix /STTPEC/MC_MD066 - Serialization type '&1' cannot be changed to '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /STTPEC/MC_MD -

• Message number: 066

• Message text: Serialization type '&1' cannot be changed to '&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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /STTPEC/MC_MD066 - Serialization type '&1' cannot be changed to '&2' ?

  The SAP error message /STTPEC/MC_MD066 indicates that there is an issue with changing the serialization type of a material or product in the system. This error typically arises in the context of managing materials in SAP, particularly when dealing with serialization, which is the process of assigning unique identifiers to individual items.
  Cause:
  The error message occurs when there is an attempt to change the serialization type of a material from one type (&1) to another (&2), but the system does not allow this change due to various reasons, such as:
  
  Existing Data: The material may already have existing serialized data that is incompatible with the new serialization type.
  Configuration Settings: The system configuration may restrict changes to serialization types once they have been set.
  Dependencies: There may be dependencies or links to other processes or documents that prevent the change.
  Status of the Material: The material might be in a status that does not allow changes to its serialization type.
  
  Solution:
  To resolve this error, you can consider the following steps:
  
  
  Check Existing Serialization: Review the existing serialized data for the material. If there are existing serial numbers, you may need to delete or adjust them before changing the serialization type.
  
  
  Review Configuration: Check the configuration settings in the system related to serialization. Ensure that the system allows changes to serialization types for the specific material type.
  
  
  Material Status: Verify the status of the material. If the material is in a locked or restricted status, you may need to change its status before making the serialization type change.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on changing serialization types. There may be specific procedures or prerequisites that need to be followed.
  
  
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who can provide insights based on your specific system configuration and business processes.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to material management and serialization, such as MM02 (Change Material) or other relevant transactions.
  User Roles and Permissions: Ensure that the user attempting to make the change has the necessary permissions to modify serialization settings.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to change the serialization type as needed.