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

RM811 - Overview

• 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