How To Fix USMD1A221 - Key &2 for &1 cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1A - Messages: Abstraction Layer

• Message number: 221

• Message text: Key &2 for &1 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1A221 - Key &2 for &1 cannot be changed ?

  The SAP error message USMD1A221 indicates that a specific key (denoted as &2) for a particular object (denoted as &1) cannot be changed. This error typically occurs in the context of SAP Master Data Governance (MDG) when trying to modify a key field that is not allowed to be changed due to system constraints or business rules.
  Causes:
  
  Key Field Restrictions: The key field you are trying to change is defined as a key field in the data model, and SAP does not allow changes to key fields once they are set.
  Data Model Configuration: The data model may have been configured in such a way that certain fields are locked for changes to maintain data integrity.
  Business Rules: There may be specific business rules or validations in place that prevent changes to certain key fields after they have been created.
  Status of the Object: The object you are trying to modify may be in a status that does not allow changes (e.g., it may be in a "locked" state).
  
  Solutions:
  
  Review Key Field Configuration: Check the configuration of the data model to understand which fields are defined as key fields and the implications of changing them.
  Check Object Status: Ensure that the object you are trying to modify is in a status that allows changes. If it is locked or in a completed state, you may need to unlock it or change its status.
  Consult Business Rules: Review any business rules that may be preventing the change. If necessary, consult with your business process owner or SAP MDG consultant to understand the implications of changing the key field.
  Create a New Object: If changing the key field is not possible, consider creating a new object with the desired key value and migrating any necessary data from the old object to the new one.
  SAP Notes and Documentation: Check for any relevant SAP Notes or documentation that may provide additional insights or updates regarding this error message.
  
  Related Information:
  
  SAP MDG Documentation: Review the official SAP documentation for Master Data Governance to understand the data model and key field configurations.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., MDGIMG) to access configuration settings and data models.
  Support Community: Engage with the SAP Community or forums to see if other users have encountered similar issues and how they resolved them.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.