How To Fix K8803 - The "cost element" characteristic can be left out in activity input only.

K8803 - Overview

• Message type: E = Error

• Message class: K8 - CO Planning: Messages for Function Group KAPP

• Message number: 803

• Message text: The "cost element" characteristic can be left out in activity input only.

What causes this issue?

You have not selected the characteristic "cost element" anywhere in the
planning layout up to this point.
The characteristic can be left out only if the layout is to be used for
activity input planning.
However, this layout is not intended for this purpose as it also lacks
the characteristic "Sender cost center".

System Response

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

How to fix this error?

Please include either the characteristic "Cost element", or both the
characteristics "Sender cost center" and "Sender activity type" in the
layout.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message K8803 - The "cost element" characteristic can be left out in activity input only. ?

  The SAP error message K8803, which states "The 'cost element' characteristic can be left out in activity input only," typically occurs in the context of activity allocation in controlling (CO) when you are trying to post activity inputs without specifying a cost element. This error is related to the configuration of the activity types and how they are set up in the system.
  
  Cause:
  
  Activity Type Configuration: The error usually arises when the activity type is configured to require a cost element for the posting. In SAP, activity types can be set up to either require or not require a cost element when posting activity inputs.
  Posting Method: If you are trying to post activity inputs directly to a cost center or internal order without specifying a cost element, and the configuration does not allow for this, the system will throw this error.
  Cost Element Assignment: The cost element may not be properly assigned