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How To Fix TW144 - Table & was already generated with different structure


SAP Error Message - Details

  • Message type: E = Error

  • Message class: TW - R3trans - Messages

  • Message number: 144

  • Message text: Table & was already generated with different structure

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  • Self-Explanatory Message

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    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.



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Smart SAP Assistant

  • What is the cause and solution for SAP error message TW144 - Table & was already generated with different structure ?

    The SAP error message TW144 indicates that a table (denoted by &) has already been generated with a different structure than what is currently being attempted. This typically occurs during the generation of database tables in the Data Dictionary (DDIC) when there is a mismatch between the existing table structure and the new definition being applied.

    Cause:

    1. Table Structure Change: The most common cause is that the table structure has been modified (e.g., fields added, removed, or changed) after it was initially created or generated.
    2. Transport Issues: If the table was transported from one system to another, and the structure in the target system does not match the source system, this error can occur.
    3. Development Environment: Changes made in a development environment that were not properly transported to the production environment can lead to discrepancies.
    4. Manual Changes: Manual changes made directly in the database (outside of SAP) can also lead to this error.

    Solution:

    1. Check Table Structure: Use transaction SE11 (Data Dictionary) to check the current structure of the table. Compare it with the intended structure to identify discrepancies.
    2. Adjust the Table Definition: If the structure needs to be changed, you may need to adjust the table definition in the Data Dictionary and regenerate the table.
    3. Delete and Recreate: If the table is not populated with critical data, you might consider deleting the existing table and recreating it with the correct structure. Be cautious with this approach as it can lead to data loss.
    4. Transport Requests: Ensure that all transport requests related to the table structure have been properly imported into the target system.
    5. Check for Active Locks: Sometimes, active locks on the table can prevent changes. Use transaction SM12 to check for and remove any locks.
    6. Database Consistency: If the table structure is inconsistent due to manual changes, you may need to restore the table to a consistent state, possibly by using a backup or by recreating it.

    Related Information:

    • Transaction Codes:
      • SE11: Data Dictionary - to view and modify table definitions.
      • SE14: Database Utility - to check and adjust database objects.
      • SE03: Transport Organizer - to manage transport requests.
    • SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
    • Documentation: Review SAP documentation on Data Dictionary and table management for best practices.

    Best Practices:

    • Always make changes to table structures through the Data Dictionary rather than directly in the database.
    • Regularly transport changes between development, quality assurance, and production environments to maintain consistency.
    • Document any changes made to the table structures for future reference and troubleshooting.

    If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.

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