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

CJ511 - Overview

• 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

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 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