How To Fix RM811 - When calculating differences, actual activity must be > target activity

SAP Error Message - Details

• Message type: E = Error

• Message class: RM - Messages for Repetitive Manufacturing

• Message number: 811

• Message text: When calculating differences, actual activity must be > target activity

What causes this issue?

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

System Response

Using the 'Difference' function, the system records the difference
between actual activity entered and planned target activity in the new
row, 'excess activity'. You can only post positive activities.
Therefore, when calculating the difference, the activity quantity must
be greater than the target activity.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RM811 - When calculating differences, actual activity must be > target activity ?

  The SAP error message RM811 ("When calculating differences, actual activity must be > target activity") typically occurs in the context of activity management or cost controlling within SAP. This error indicates that the actual activity (e.g., hours worked, resources consumed) is not greater than the target activity that has been set for a particular task or project. 
  Cause:
  
  Data Entry Error: The actual activity values may have been entered incorrectly, leading to a situation where the actual is less than or equal to the target.
  Target Activity Set Too High: The target activity might have been set too high compared to the actual performance.
  Timing Issues: If the actual activity is being recorded after the target has been set, there may be a mismatch due to timing.
  Configuration Issues: There may be issues with the configuration of the activity types or the way the system is set up to calculate differences.
  
  Solution:
  
  Verify Data Entry: Check the actual activity values entered in the system. Ensure that they are correct and reflect the true performance.
  Adjust Target Activity: If the target activity is set too high, consider adjusting it to a more realistic value based on historical data or project requirements.
  Review Timing: Ensure that the actual activity is being recorded in the correct period and that there are no discrepancies in the timing of data entry.
  Check Configuration: Review the configuration settings related to activity management and ensure they are set up correctly. This may involve checking the settings for activity types, cost centers, and any related parameters.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling this error in your version of SAP.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJI3 (Project Actual Line Items) or CJR2 (Change Project) to review and adjust the relevant data.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that the user has the appropriate permissions to make changes to activity records and targets.
  Training: If this error is common in your organization, consider providing training to users on how to properly enter and manage activity data in SAP.
  
  By addressing the underlying causes and following the suggested solutions, you should be able to resolve the RM811 error and ensure that actual activities are correctly compared to target activities in your SAP system.