How To Fix 00751 - Special stock: Quantity lock table full

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 751

• Message text: Special stock: Quantity lock table full

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00751 - Special stock: Quantity lock table full ?

  The SAP error message "00751 Special stock: Quantity lock table full" typically occurs when the system is unable to process a transaction involving special stock (like consignment, project stock, or returnable packaging) due to the quantity lock table being full. This table is used to manage locks on stock quantities to prevent inconsistencies during transactions.
  Cause:
  
  Lock Table Saturation: The quantity lock table has a limited capacity, and if too many locks are created without being released, it can become full.
  Long-running Transactions: If transactions that require locks are taking too long to complete, they may not release their locks in a timely manner.
  High Volume of Transactions: A high volume of transactions involving special stock can lead to the lock table filling up quickly.
  Configuration Issues: There may be configuration settings that are not optimized for the volume of transactions being processed.
  
  Solution:
  
  Release Locks: Check for any long-running transactions that may be holding locks and resolve them. You can use transaction codes like SM12 (to view and delete locks) to identify and release unnecessary locks.
  Increase Lock Table Size: If the issue persists, consider increasing the size of the lock table. This can be done by adjusting the parameters in the SAP system configuration (specifically, the enque/table_size parameter).
  Optimize Transactions: Review and optimize the processes that are creating locks. This may involve streamlining workflows or reducing the number of simultaneous transactions.
  Monitor System Performance: Regularly monitor the performance of the system and the lock table usage to identify potential issues before they become critical.
  Consult SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: To view and manage locks.
  SM21: To check system logs for any related errors or warnings.
  ST22: To check for dumps that may provide insight into the issue.
  
  
  SAP Basis Team: If you are not able to resolve the issue, it may be necessary to involve your SAP Basis team for further investigation and assistance.
  Documentation: Refer to SAP Help documentation for more details on special stock management and lock handling.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the "00751 Special stock: Quantity lock table full" error effectively.