How To Fix ARUN_MAIN041 - Item &1 is assigned; cannot delete schedule line &2 (see long text &3)

ARUN_MAIN041 - Overview

• Message type: E = Error

• Message class: ARUN_MAIN -

• Message number: 041

• Message text: Item &1 is assigned; cannot delete schedule line &2 (see long text &3)

What causes this issue?

The material is relevant to Supply Assignment (ARun) and an assignment
exists for this document item.
You cannot change the document item for one of the following reasons:
The unassign rule field check is set to <ZK>Error </>in Customizing
under <LS>Cross-Application Components > Advanced Available-to-Promise
(aATP) > Supply Assignment (ARun) > Cross-Applications</>.
The item is already assigned; therefore, the material cannot be changed.

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?

You can set the field check from Error to one of the following options.
N = No Action
W = Warnings Before an Order is Unassigned
For application types (purchase orders, inline confirmations, and
inbound deliveries), you can set the Customizing under <LS>Cross-
Application Components > Advanced Available-to-Promise (aATP) > Supply
Assignment (ARun) > Cross-Applications > > Purchase Order Handling</>.
For application types (stock transport orders), you can set the
Customizing under <LS>Cross-Application Components > Advanced
Available-to-Promise (aATP) > Supply Assignment (ARun) >
Cross-Applications > Stock Transport Order Handling</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ARUN_MAIN041 - Item &1 is assigned; cannot delete schedule line &2 (see long text &3) ?

  The SAP error message ARUN_MAIN041 indicates that you are trying to delete a schedule line for an item that is currently assigned to another process or document. This typically occurs in the context of sales orders, purchase orders, or production orders where schedule lines are used to manage delivery dates and quantities.
  
  Cause:
  The error arises when:
  
  The schedule line you are attempting to delete is linked to an existing assignment (e.g., it may be part of a delivery, a production order, or another document).
  There are dependencies or relationships that prevent the deletion of the schedule line.
  The item is in a status that does not allow for modifications, such as being locked or in a completed state.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Assignments: Review the item and its schedule lines to see what they are currently assigned to. You can do this by checking the related documents (like deliveries