How To Fix ARUN_MAIN104 - Item &1 will be unassigned.

ARUN_MAIN104 - Overview

• Message type: E = Error

• Message class: ARUN_MAIN -

• Message number: 104

• Message text: Item &1 will be unassigned.

What causes this issue?

The material is relevant to Supply Assignment (ARun) and an assignment
exists for this document item. You have not defined a rule to unassign
orders for an application type in Customizing under Cross-Application
Components > Advanced Available-to-Promise (aATP) > Supply Assignment
(ARun) > Cross-Applications>Production Order Handling
If you have not defined any rule to unassign an order, then the orders
will be unassigned automatically.

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

System Response

How to fix this error?

Define rules to unassign orders for an application type in Customizing
under <LS>Cross-Application Components > Advanced Available-to-Promise
(aATP) > Supply Assignment (ARun) > Cross-Applications>Production Order
Handling</>
By defining a rule to unassign orders, you specify exactly how the
system should react when an application type is modified (for example,
change in requirement date, goods receipt date, plant, storage location,
and so on).
You set the appropriate fields listed in the application type in
Customizing. For field checks, you can assign one of the following
options.
N = No Action
W = Warnings Before an Order is Unassigned
E = Change Not Permitted
Depending on the selected parameter, the system decides how and when the
quantities should be unassigned

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_MAIN104 - Item &1 will be unassigned. ?

  The SAP error message ARUN_MAIN104 indicates that a specific item (denoted by &1) will be unassigned. This message typically arises in the context of document processing, such as during the creation or modification of documents in SAP, particularly in the areas of Accounts Receivable, Accounts Payable, or Material Management.
  
  Cause:
  The error can occur due to several reasons, including but not limited to:
  
  Item Deletion: The item referenced may have been deleted or is no longer valid in the system.
  Data Inconsistency: There may be inconsistencies in the data related to the item, such as missing or incorrect master data.
  
  Configuration Issues: The configuration settings in SAP may not allow the item to be assigned to the document or transaction.
  Business Rules: Certain business rules or validations may prevent the assignment of the item to the document.
  
  
  Solution:
  To resolve the ARUN_MAIN104 error, you can take the following steps:
  
  
  Check Item Validity: Verify that the item referenced in the