How To Fix COM_IL_GEN029 - At least one entry already exists; generation terminated

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_IL_GEN - Error/Status Messages Relationship Type Generator

• Message number: 029

• Message text: At least one entry already exists; generation terminated

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message COM_IL_GEN029 - At least one entry already exists; generation terminated ?

  The SAP error message COM_IL_GEN029 indicates that there is an issue with the generation of a document or entry in the system because at least one entry already exists. This error typically occurs in the context of Integrated Logistics or when dealing with master data generation, such as in the areas of materials management, production planning, or inventory management.
  Cause:
  The error is triggered when the system attempts to create a new entry (like a material, document, or record) that already exists in the database. This can happen due to:
  
  Duplicate Entries: The system is trying to create a record that has the same key or identifier as an existing record.
  Configuration Issues: There may be issues in the configuration settings that allow for duplicate entries.
  Data Migration: During data migration or upload processes, if the same data is being uploaded multiple times, this error can occur.
  User Error: Users may inadvertently attempt to create a record that already exists.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check for Existing Entries: 
  
  Use transaction codes like SE16 or SE11 to check the relevant database table for existing entries that match the one you are trying to create.
  Ensure that the key fields (like material number, document number, etc.) are unique.
  
  
  
  Modify the Entry: 
  
  If you find that the entry already exists, you may need to modify your input to create a new unique entry.
  If the existing entry is incorrect or needs to be updated, consider updating it instead of creating a new one.
  
  
  
  Review Configuration: 
  
  Check the configuration settings in the relevant module to ensure that they are set up correctly to prevent duplicates.
  Consult with your SAP Basis or functional team if necessary.
  
  
  
  Data Migration Checks: 
  
  If this error occurs during a data migration process, review the data being migrated to ensure there are no duplicates.
  Use tools like LSMW or BAPIs carefully to avoid duplicate entries.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to the specific module you are working with for any additional guidance on handling this error.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and others that may help in troubleshooting.
  SAP Notes: Check for any SAP Notes related to this error message for specific patches or updates that may address the issue.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.