How To Fix /SCWM/SHP_RCV393 - HU &1 could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/SHP_RCV -

• Message number: 393

• Message text: HU &1 could not be locked

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 /SCWM/SHP_RCV393 - HU &1 could not be locked ?

  The SAP error message /SCWM/SHP_RCV393 HU &1 could not be locked typically occurs in the context of handling units (HUs) in the SAP Extended Warehouse Management (EWM) module. This error indicates that the system is unable to lock a specific handling unit (identified by &1) for processing, which can prevent further operations on that handling unit.
  Causes:
  
  Concurrent Access: Another transaction or user may be currently accessing or processing the same handling unit, leading to a lock conflict.
  System Configuration: There may be issues with the configuration of the warehouse management system that affect how locks are managed.
  Database Locking Issues: There could be underlying database issues that prevent the system from acquiring the necessary locks.
  Long-Running Transactions: If a transaction is taking too long to complete, it may hold onto the lock longer than expected, causing other transactions to fail.
  
  Solutions:
  
  Check for Active Sessions: Use transaction codes like SM12 to check for any active locks on the handling unit. If you find a lock that is no longer needed, you can manually delete it (if you have the necessary authorizations).
  Wait and Retry: If the lock is due to another user or process, waiting for a short period and then retrying the operation may resolve the issue.
  Review Transaction Logs: Check the transaction logs to identify any long-running processes that may be holding onto the lock.
  System Configuration Review: Ensure that the system configuration for handling units and warehouse management is set up correctly. Consult with your SAP Basis or EWM configuration team if necessary.
  Database Health Check: If the issue persists, it may be worth performing a health check on the database to ensure there are no underlying issues affecting locking mechanisms.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage locks), SM21 (to view system logs), and SLG1 (to view application logs) for troubleshooting.
  User Authorizations: Ensure that the user has the necessary authorizations to perform operations on handling units, as insufficient permissions can sometimes lead to unexpected errors.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.