How To Fix USMD1A217 - Key &2 for &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1A - Messages: Abstraction Layer

• Message number: 217

• Message text: Key &2 for &1 already exists

What causes this issue?

You have changed the key of an entity of type &V1& from &V3& to &V2&.
However, an entity already exists with key &V2&.

System Response

The system uses the old key &V3&.

How to fix this error?

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

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 USMD1A217 - Key &2 for &1 already exists ?

  The SAP error message USMD1A217 indicates that there is a duplicate entry for a key in the system. Specifically, the message states that the key &2 for &1 already exists. This typically occurs in the context of Master Data Governance (MDG) or similar data management scenarios where unique keys are required for records.
  Cause:
  
  Duplicate Data Entry: The most common cause of this error is that an attempt is being made to create or update a record with a key that already exists in the database.
  Data Migration Issues: If data is being migrated from another system or imported in bulk, it may lead to duplicates if the uniqueness constraints are not properly handled.
  Concurrency Issues: If multiple users or processes are trying to create or update the same record simultaneously, it can lead to this error.
  
  Solution:
  
  Check for Existing Records: Before creating or updating a record, check the database to see if a record with the same key already exists. You can use transaction codes like SE16 or SE11 to query the relevant tables.
  Modify the Key: If you are trying to create a new record, ensure that the key you are using is unique. You may need to modify the key or use a different identifier.
  Data Cleansing: If this error arises during data migration, perform data cleansing to remove duplicates before importing the data.
  Error Handling in Code: If you are using custom code or enhancements, ensure that there is proper error handling to manage situations where duplicates might occur.
  Consult Documentation: Review the SAP documentation related to the specific module you are working with to understand the constraints and requirements for unique keys.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and MDG-specific transactions if applicable.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.