How To Fix G0201 - Task &1 preceding &2 is not yet blocked in period &3/&4

SAP Error Message - Details

• Message type: E = Error

• Message class: G0 - Messages for SAP Consolidation

• Message number: 201

• Message text: Task &1 preceding &2 is not yet blocked in period &3/&4

What causes this issue?

The task &V1& (which precedes task &V2&) is not "blocked" yet. This
status must be achieved before task &v2& can be blocked in period &V3&/
&V4&.

System Response

Error message

How to fix this error?

Execute the tasks preceding &V2& (as defined in Customizing) for period
&V3&/&V4& in update mode without errors, and then block them.
The same applies to tasks that need to be executed and blocked prior to
&V2& due to validation requirements (implicit preceding tasks).
Only when when all of the tasks preceding task &V2& (including &V1&)
are blocked (in period &V3&/&V4&) can you also block task &v2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message G0201 - Task &1 preceding &2 is not yet blocked in period &3/&4 ?

  The SAP error message G0201 indicates that a task (identified by &1) is not yet blocked in the specified period (identified by &3/&4) for a preceding task (identified by &2). This error typically arises in the context of project management or production planning within SAP, where tasks or activities are dependent on one another.
  Cause:
  
  Task Dependency: The error usually occurs when there is a dependency between tasks, and the preceding task has not been blocked or completed in the specified period. This means that the system is trying to process a task that cannot proceed until the previous task is either completed or blocked.
  Period Settings: The period settings in the system may not allow for the task to be processed because the preceding task is still open or not yet blocked.
  Configuration Issues: There may be configuration issues in the project or task settings that prevent the proper blocking of tasks.
  
  Solution:
  
  Check Task Status: Verify the status of the preceding task (&2). Ensure that it is either completed or blocked in the specified period (&3/&4). If it is still open, you may need to complete or block it before proceeding with the current task.
  Adjust Period Settings: If the preceding task is correctly completed or blocked, check the period settings in the system. Ensure that the periods are correctly defined and that the tasks are allowed to be processed in the specified period.
  Review Dependencies: Review the dependencies between tasks to ensure that they are correctly defined. If necessary, adjust the task dependencies to reflect the correct order of operations.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling task dependencies and blocking tasks in your version of SAP.
  Contact Support: If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or CJI3 (Project Actual Line Items) to check the status of tasks and their dependencies.
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Roles: Ensure that you have the necessary permissions to block or complete tasks in the system, as user roles can affect your ability to perform these actions.
  
  By following these steps, you should be able to resolve the G0201 error and proceed with your tasks in SAP.