How To Fix CMCL108 - An item cannot be assigned to a dummy operation

CMCL108 - Overview

• Message type: E = Error

• Message class: CMCL - Service layer for component allocations

• Message number: 108

• Message text: An item cannot be assigned to a dummy operation

What causes this issue?

You want to assign items to an operation that references a reference
operation set or reference rate routing. This is not possible.

System Response

The component assignment was not created.

How to fix this error?

Assign the items that you want to assign to a reference operation set
(or reference rate routing) to the operations of the reference
operation set (or reference rate routing).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMCL108 - An item cannot be assigned to a dummy operation ?

  The SAP error message CMCL108 ("An item cannot be assigned to a dummy operation") typically occurs in the context of production planning or process management within SAP. This error indicates that there is an attempt to assign a material or item to a "dummy operation" in a routing or production order, which is not allowed.
  
  Cause:
  
  Dummy Operation: A dummy operation is a placeholder in a routing that does not perform any actual work. It is often used for organizational purposes or to represent a step that does not require any resources or time.
  Incorrect Assignment: The error arises when there is an attempt to assign a material or component to this dummy operation, which is not valid since dummy operations do not consume materials or have any associated costs.
  
  
  Solution:
  
  Review the Routing: Check the routing associated with the production order or process. Identify the dummy operation and ensure that no materials are assigned