How To Fix COM_DML_ENGINE036 - Object cannot be created (key is already assigned)

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_DML_ENGINE - MDF Processing Layer

• Message number: 036

• Message text: Object cannot be created (key is already assigned)

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 COM_DML_ENGINE036 - Object cannot be created (key is already assigned) ?

  The SAP error message COM_DML_ENGINE036 indicates that there is an attempt to create an object (such as a master data record) that cannot be created because the key you are trying to assign is already in use. This typically occurs in the context of data management and object creation within SAP systems, particularly in modules related to materials management, production planning, or similar areas.
  Cause:
  
  Duplicate Key: The most common cause of this error is that the key (such as a material number, customer number, or vendor number) you are trying to create already exists in the system.
  Data Migration Issues: If you are migrating data from another system or performing mass uploads, there may be conflicts with existing records.
  Incorrect Input: The input data might be incorrect or not properly validated before the creation attempt.
  Concurrency Issues: If multiple users or processes are trying to create the same object simultaneously, it can lead to this error.
  
  Solution:
  
  Check Existing Records: Before attempting to create a new object, check if the key already exists in the system. You can do this by using transaction codes like SE16 or SE11 to look up the relevant database table.
  Use a Unique Key: Ensure that the key you are trying to create is unique. If you are generating keys programmatically, implement checks to avoid duplicates.
  Data Validation: Implement validation checks in your data entry or migration processes to ensure that you are not attempting to create records with existing keys.
  Error Handling: If you are using a program or script to create records, add error handling to catch this specific error and provide meaningful feedback to the user.
  Consult Documentation: Review SAP documentation or notes related to the specific module you are working with for any additional guidance or known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for checking existing records (e.g., SE16, SE11).
  SAP Notes: Check SAP Notes for any updates or patches related to this error message. Sometimes, specific issues are documented with solutions or workarounds.
  User Authorization: Ensure that the user has the necessary authorizations to create the object in question.
  System Logs: Review system logs (transaction SLG1) for additional context or related errors that may provide more insight into the issue.
  
  If the problem persists after checking for duplicates and ensuring proper data handling, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.