How To Fix ARUN_MAIN040 - Item &1 is assigned and cannot be deleted or blocked (see long text &3)

SAP Error Message - Details

• Message type: E = Error

• Message class: ARUN_MAIN -

• Message number: 040

• Message text: Item &1 is assigned and cannot be deleted or blocked (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_MAIN040 - Item &1 is assigned and cannot be deleted or blocked (see long text &3) ?

  The SAP error message ARUN_MAIN040 indicates that an item (identified by &1) is currently assigned to another object or process, which prevents it from being deleted or blocked. This is a common issue in SAP systems when trying to modify or remove items that are still in use or linked to other transactions.
  
  Cause:
  
  Active Assignments: The item is linked to other documents, such as purchase orders, sales orders, or other transactions.
  Dependencies: The item may have dependencies that need to be resolved before it can be deleted or blocked.
  Status Restrictions: The item may be in a status that does not allow for deletion or blocking.
  
  
  Solution:
  
  Check Assignments: Review the item to see where it is currently assigned. You can use transaction codes like ME23N (for purchase orders) or VA03 (for sales orders) to check if the item is linked to any active documents.
  Remove Dependencies: If the item is linked to other documents, you