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How To Fix BT721 - An error occurred in the central lock mechanism


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BT721 - Overview

  • Message type: E = Error

  • Message class: BT - Background processing messages

  • Message number: 721

  • Message text: An error occurred in the central lock mechanism

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  • 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.



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Smart SAP Assistant

  • What is the cause and solution for SAP error message BT721 - An error occurred in the central lock mechanism ?

    Error Code: BT721

    Error Message: An error occurred in the central lock mechanism


    Summary

    This error indicates that the SAP central lock mechanism encountered a problem, preventing the system from obtaining or releasing locks on objects needed for processing. It usually means that a lock request failed or a lock table inconsistency occurred.


    Root Causes

    • A previous process or user session did not release locks properly, causing lock table entries to remain and block new requests.
    • System performance issues or database locks causing delays or timeouts in the central lock management.
    • Incorrect or conflicting custom code or user exits that interfere with the lock handling.
    • High system load or deadlocks in parallel processes trying to access the same objects simultaneously.

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