How To Fix DPR_SHARED805 - System cannot lock phase &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DPR_SHARED - Development Projects: Messages for Shared Objects

• Message number: 805

• Message text: System cannot lock phase &1

What causes this issue?

You are editing the project definition in change mode but the system
cannot lock phase &V1& at present.

System Response

You cannot edit a phase that is unlocked.

How to fix this error?

In the structure, click one of the project elements of the
unlocked phase to try to lock the phase again.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DPR_SHARED805 - System cannot lock phase &1 ?

  The SAP error message DPR_SHARED805, which states "System cannot lock phase &1," typically occurs in the context of project management within the SAP system, particularly when dealing with the Project Management (PS) or Project System (DPR) modules. This error indicates that the system is unable to acquire a lock on a specific phase of a project, which can prevent users from making changes or accessing certain functionalities.
  Causes:
  
  Concurrent Access: Another user or process may already have a lock on the specified phase, preventing your session from acquiring the necessary lock.
  System Configuration: There may be issues with the configuration of the locking mechanism in the SAP system.
  Database Issues: Problems with the underlying database, such as deadlocks or transaction issues, can also lead to locking problems.
  Long-Running Transactions: If a transaction is taking too long to complete, it may hold onto locks longer than expected, causing other transactions to fail.
  User Authorizations: Insufficient authorizations for the user trying to access or modify the phase can also lead to locking issues.
  
  Solutions:
  
  Check for Active Locks: Use transaction code SM12 to check for existing locks on the phase. If you find locks that are no longer needed, you can delete them (if you have the necessary authorizations).
  Wait and Retry: If the lock is held by another user, you may need to wait until that user completes their transaction and releases the lock.
  Review User Authorizations: Ensure that the user has the necessary authorizations to access and modify the project phase.
  System Configuration Review: Consult with your SAP Basis team to review the locking configuration and ensure it is set up correctly.
  Database Health Check: If you suspect database issues, work with your database administrator to check for deadlocks or other performance issues.
  Transaction Optimization: If long-running transactions are common, consider optimizing them to reduce the time locks are held.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the DPR_SHARED805 error. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to diagnose issues further.
  User Documentation: Review the user documentation for the Project System module to understand how locking works and best practices for managing project phases.
  
  If the issue persists after trying the above solutions, it may be necessary to escalate the problem to your SAP support team or consult with SAP directly for further assistance.