How To Fix CJ511 - Network & locked. Time scheduling not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 511

• Message text: Network & locked. Time scheduling not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CJ511 - Network & locked. Time scheduling not possible ?

  The SAP error message CJ511 ("Network & locked. Time scheduling not possible") typically occurs in the context of project management within SAP, particularly when dealing with networks in Project System (PS). This error indicates that the network you are trying to schedule is currently locked, which prevents any time scheduling operations from being performed.
  Causes:
  
  Network Lock: The network is locked by another user or process. This can happen if someone is currently editing the network or if a transaction that involves the network is still open.
  Incomplete Data: The network may have incomplete or inconsistent data that prevents scheduling.
  Authorization Issues: The user may not have the necessary authorizations to perform scheduling on the network.
  System Lock: Sometimes, system-level locks can occur due to background jobs or other processes that are running.
  
  Solutions:
  
  
  Check for Locks:
  
  Use transaction code SM12 to check for any locks on the network. You can filter by the user or the object type to find relevant locks.
  If you find a lock that is no longer needed, you can delete it (if you have the necessary authorizations).
  
  
  
  Wait for Release:
  
  If the lock is due to another user, you may need to wait until they finish their work and release the lock.
  
  
  
  Check Network Status:
  
  Ensure that the network is in a valid status for scheduling. You can check the status in transaction CJ20N or CJ02.
  
  
  
  Review Authorizations:
  
  Ensure that you have the necessary authorizations to perform scheduling on the network. You may need to contact your SAP security team if you suspect authorization issues.
  
  
  
  Check for Incomplete Data:
  
  Review the network for any missing or inconsistent data that may prevent scheduling. Ensure that all required fields are filled out correctly.
  
  
  
  System Administration:
  
  If the issue persists, it may require intervention from your SAP Basis team to check for any system-level locks or issues.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  CJ20N: Project Builder
  CJ02: Change Network
  SM12: Display and Delete Locks
  CJ03: Display Network
  
  
  Documentation: Refer to SAP Help documentation for Project System for more detailed information on network management and scheduling.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  If the problem continues after trying the above solutions, it may be beneficial to consult with your SAP support team or refer to SAP's support portal for further assistance.