How To Fix CDS_UNIT_MESSAGE107 - Insertion failed. A record with same key already exists in the table

SAP Error Message - Details

• Message type: E = Error

• Message class: CDS_UNIT_MESSAGE - Message Class

• Message number: 107

• Message text: Insertion failed. A record with same key already exists in the table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CDS_UNIT_MESSAGE107 - Insertion failed. A record with same key already exists in the table ?

  The SAP error message CDS_UNIT_MESSAGE107 indicates that an attempt to insert a record into a database table has failed because a record with the same key already exists. This is a common issue when working with databases, particularly in scenarios involving data insertion or updates.
  Cause:
  
  Duplicate Key Violation: The most common cause of this error is that the primary key or unique constraint of the table is being violated. This means that the record you are trying to insert has a key value that already exists in the table.
  Concurrency Issues: If multiple processes or users are trying to insert records simultaneously, one process may insert a record with a key that another process is also trying to insert.
  Data Migration or Upload Issues: If you are migrating data or uploading records in bulk, there may be duplicates in the source data that are not being handled properly.
  Incorrect Logic in Application Code: There may be a flaw in the application logic that leads to attempts to insert the same record multiple times.
  
  Solution:
  
  Check for Existing Records: Before attempting to insert a new record, check if a record with the same key already exists in the table. You can do this by querying the table with the key value.
  Handle Duplicates: If duplicates are expected, consider implementing logic to handle them, such as:
  
  Updating the existing record instead of inserting a new one.
  Ignoring the insert if a duplicate is found.
  Using a different key or generating a new unique key for the record.
  
  
  Data Validation: Ensure that the data being inserted is validated to prevent duplicates. This can be done at the application level or through database constraints.
  Review Application Logic: If the error is occurring due to application logic, review the code to ensure that it correctly handles insertions and checks for existing records.
  Transaction Management: If multiple processes are involved, consider using transaction management to ensure that operations are atomic and to prevent race conditions.
  
  Related Information:
  
  Database Constraints: Familiarize yourself with the primary key and unique constraints defined on the table. Understanding these constraints will help you design your data operations accordingly.
  SAP Documentation: Refer to SAP's official documentation for more details on handling database operations and error messages.
  Debugging Tools: Use debugging tools available in SAP to trace the execution flow and identify where the duplicate insertion attempt is occurring.
  Logs and Traces: Check application logs and database logs for additional context around the error, which may provide insights into why the duplicate insertion is being attempted.
  
  By following these steps, you should be able to resolve the error and prevent it from occurring in the future.