How To Fix G0839 - Task group &1 is invalid with regards to &2 and task &3

SAP Error Message - Details

• Message type: E = Error

• Message class: G0 - Messages for SAP Consolidation

• Message number: 839

• Message text: Task group &1 is invalid with regards to &2 and task &3

What causes this issue?

Task group &V1& is not a valid task group in relation to task group
&V2&, which is assigned the dimension for the current period and
version.
A valid (group-dependent) task group cannot contain any gaps regarding
the display sequence of tasks of task group &V2&.
Task group &V1& concerns a group-dependent task group, which was
generally assigned to the consolidation group (this is defined for you
in the global parameters) in the master record.
In the current case, an inconsistency was established regarding the
display sequence of task &V3& in task groups &V1& and &V2&.
Example:
The global task group assigned to the dimension is
TG = {T1, T2, T3, T4} with the following display sequence in the
monitor:
T1 -> T2 -> T3 -> T4.

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

Then there are the following task groups with valid task groups
regarding TG:
{T1}, {T1, T2}, {T1, T2, T3}, {T1, T2, T3, T4}
Task group {T1, T3} would not be valid task groups in this example, as
T2 would not be included as predecessor of T3, and consequently there
would be a gap in the display.
Note that the quantity of tasks of a valid task group always form a
partial quantity of all the tasks to be exeuted in the dimension. Also
one task must be indicated as the last logical task in one of the task
groups for the data monitor. This can only be a task, which does not
have any successor tasks.

System Response

Error message

How to fix this error?

Check the definition of task groups &V1& and &V2& in Customizing as
well as, if required, the assignment of group-dependent task group &V1&
in the master record of the consolidation group, this is possibly
entered for you in the global parameter settings.
If necessary, complete the quantity of assigned tasks from &V1&, or use
a different (regarding &V2&, valid) task group for a group-dependent
assignment (which is always optional).
If you use the field "Arrangement" in the task group definition to
influence the task sequence in the monitors, then make sure that the
field is consistently maintained for ALL assigned tasks of task group
&V1& and task group &V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message G0839 - Task group &1 is invalid with regards to &2 and task &3 ?

  The SAP error message G0839 indicates that there is an issue with a task group in the context of a specific task. This error typically arises in the context of SAP's project management or workflow processes, where task groups are used to organize and manage tasks.
  Cause:
  The error message "G0839 Task group &1 is invalid with regards to &2 and task &3" can be caused by several factors, including:
  
  Invalid Task Group: The specified task group (&1) may not exist or may have been deleted or deactivated.
  Incorrect Configuration: The task group may not be properly configured for the specific project or task type indicated by &2 and &3.
  Authorization Issues: The user may not have the necessary permissions to access or modify the specified task group.
  Data Inconsistencies: There may be inconsistencies in the data related to the task group, such as missing or incorrect entries in the database.
  
  Solution:
  To resolve the G0839 error, you can take the following steps:
  
  
  Verify Task Group: Check if the task group specified in the error message (&1) exists in the system. You can do this by navigating to the relevant configuration or management area in SAP.
  
  
  Check Configuration: Ensure that the task group is correctly configured for the project or task type indicated by &2 and &3. This may involve reviewing the settings and parameters associated with the task group.
  
  
  Review Authorizations: Ensure that the user encountering the error has the necessary authorizations to access and work with the specified task group. You may need to consult with your SAP security team to verify and adjust user roles and permissions.
  
  
  Data Consistency Check: Perform a data consistency check to identify any discrepancies or missing data related to the task group. This may involve running specific reports or using transaction codes that help identify inconsistencies.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for additional guidance on task groups and related configurations. This can provide insights into best practices and common issues.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance. They can provide more detailed troubleshooting based on your specific system configuration and error context.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in managing task groups, such as CJ20N for project management or CJI3 for project reports.
  SAP Notes: Check for any SAP Notes related to the G0839 error message, as these may provide specific fixes or patches that address known issues.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing additional insights or solutions.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the G0839 error in your SAP system.