How To Fix KO156 - A statistical order may not contain any control parameters

KO156 - Overview

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 156

• Message text: A statistical order may not contain any control parameters

What causes this issue?

You cannot settle statistical orders or apply overhead to them.
Therefore, it is not possible to create a settlement rule for
statistical orders. It is also not possible to enter the following
parameters:
Processing group
Settlement cost element
Settlement cost center
G/L account
Costing sheet
Overhead key
Results analysis key
Variance key
You can enter an "automatically posted cost center", and make a true
posting of it, in parallel to the order. You can only enter this cost
center (from Release 4.0) in the "Control" subscreen.

How to fix this error?

Undo the parameters listed above, or remove the "Order is statistical"
indicator, and if needed, the cost center that was actually posted to.

Error message extract from SAP system. Copyright SAP SE.

KO156 - Details

• The SAP error message KO156, which states "A statistical order may not contain any control parameters," typically occurs when you are trying to create or modify a statistical order in SAP that has control parameters defined. Statistical orders are used for tracking costs and revenues without affecting the financial accounting directly, and they do not allow certain control parameters that are typically used in standard orders.
  
  Cause:
  The error arises because statistical orders are designed to be simpler and do not require the same level of detail as standard orders. Control parameters such as settlement rules, work breakdown structure (WBS) elements, or other controlling parameters are not applicable to statistical orders. If you attempt to assign these parameters to a statistical order, SAP will generate this error message.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Order Type: Ensure that you are using the correct order type. If you need to