How To Fix ARUN_MAIN024 - PO item will be unassigned if &1 is changed in confirmation

SAP Error Message - Details

• Message type: E = Error

• Message class: ARUN_MAIN -

• Message number: 024

• Message text: PO item will be unassigned if &1 is changed in confirmation

What causes this issue?

The material is relevant to Supply Assignment (ARun) and an assignment
exists for this document item.
Item will be unassigned for one of the following reason.
Unassign rule is not defined to specify the date horizon against
Purchase order in customizing under <LS>Cross-Application Components >
Advanced Available-to-Promise (aATP) > Supply Assignment (ARun) >
Cross-Applications > Purchase Order Handling</>.
Unassign rule is defined in customizing under <LS>Cross-Application
Components > Advanced Available-to-Promise (aATP) > Supply Assignment
(ARun) > Cross-Applications > Purchase Order Handling</>. You have
created a confirmation for an assigned purchase order item with the
confirmation delivery date greater than the item delivery date.
Therefore, the assigned requirements with respect to purchase order item
is compared against the confirmation delivery date. If date reaction is
outside the specified horizon, the purchase order item is unassigned.(in
this case, only the purchase order date horizon is considered and not
the date reaction field check).

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?

Define a rule to unassign orders. You can specify how the system should
react when the document is modified (for example, change in range of
days for purchase order).
Enter an alphanumeric key (maximum of four characters) and a description
for your rule.
Check the date horizon parameters maintained and change if needed.

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_MAIN024 - PO item will be unassigned if &1 is changed in confirmation ?

  The SAP error message ARUN_MAIN024 indicates that there is an issue with a Purchase Order (PO) item during the confirmation process. Specifically, it suggests that if a certain field (denoted by &1) is changed in the confirmation, the PO item will be unassigned. This typically occurs in the context of production orders or confirmations related to goods movements.
  Cause:
  The error is usually triggered when:
  
  Field Change: A field that is critical for the assignment of the PO item is modified during the confirmation process. This could be a quantity, delivery date, or any other key attribute that links the confirmation to the PO.
  Data Integrity: The system is designed to maintain data integrity, and changing certain fields may lead to inconsistencies in the assignment between the confirmation and the PO.
  Configuration Issues: There may be configuration settings in the system that dictate how confirmations are processed and how they relate to POs.
  
  Solution:
  To resolve this error, consider the following steps:
  
  Review Changes: Check the specific field that is being changed (indicated by &1) during the confirmation. Ensure that the change is necessary and valid.
  Avoid Unnecessary Changes: If the change is not required, avoid modifying that field during the confirmation process.
  Consult Documentation: Refer to SAP documentation or help resources to understand the implications of changing the specific field in the context of confirmations.
  System Configuration: If the issue persists, consult with your SAP Basis or configuration team to review the settings related to confirmations and POs. They may need to adjust the configuration to allow for the desired changes without unassigning the PO item.
  Testing: After making any changes, conduct thorough testing to ensure that the confirmation process works as expected without triggering the error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO11N (for confirmations) and ME23N (for viewing POs) to help diagnose and resolve the issue.
  User Roles: Ensure that the user performing the confirmation has the appropriate roles and permissions to make changes to the PO and its related confirmations.
  
  If the problem continues after following these steps, it may be beneficial to engage with SAP support or your internal SAP team for further assistance.