How To Fix ARUN_MAIN031 - You cannot change item &1; item is already assigned (see long text &2)

ARUN_MAIN031 - Overview

• Message type: E = Error

• Message class: ARUN_MAIN -

• Message number: 031

• Message text: You cannot change item &1; item is already assigned (see long text &2)

What causes this issue?

Assignment exist for the item in ARUN_BDBS. Customization for
Unassigning Rule for Goods Issue or Goods receipt is maintained as
Error.

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?

Change the customization from Error to Warning for the fields
requested for change.
Go to SPRO->Cross application components->Advanced available to
Promise-> Supply assignment->Cross Applications->Goods issue handling
(For issue message raised with Goods issue)
Go to SPRO->Cross application components->Advanced available to
Promise-> Supply assignment->Cross Applications->Goods receipt handling
(For issue message raised with Goods Receipt)

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_MAIN031 - You cannot change item &1; item is already assigned (see long text &2) ?

  The SAP error message ARUN_MAIN031 indicates that you are trying to change an item in a document (such as a purchase order, sales order, or another transactional document) that is already assigned to another process or document. This typically occurs in scenarios where items are linked to specific transactions, and the system prevents changes to maintain data integrity.
  
  Cause:
  
  
  Item Assignment: The item you are trying to change is already assigned to another document or process. This could be due to various reasons, such as:
  
  The item is part of a delivery or invoice that has already been processed.
  The item is linked to a project or another document that restricts changes.
  The item is in a status that does not allow modifications.
  
  
  
  Document Status: The document containing the item may be in a status that does not permit changes (e.g., completed, closed, or locked).
  
  
  Data Integrity Rules: SAP has built-in rules to ensure data integrity, which