How To Fix WTADDI442 - No additional is assigned to external additional &1

WTADDI442 - Overview

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 442

• Message text: No additional is assigned to external additional &1

&cause&
You have entered an external description for an
<DS:GLOS.3526BC88AFAB52B9E10000009B38F974>additional</> that cannot be
converted into an internal material number.

System Response

The system cannot accept internal description &V1& that you entered.

How to fix this error?

Check your entries.
If you want to assign a material number, you can do this
<DS:TRAN.VD51>here</>. (Afterwards, you must call sales order
maintenance once again!)

Error message extract from SAP system. Copyright SAP SE.

WTADDI442 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WTADDI442 No additional is assigned to external additional &1
  
  Meaning / 
  Cause:
  This error occurs in the SAP Warehouse Management (WM) or Extended Warehouse Management (EWM) module when the system tries to find an internal additional (a warehouse-specific identifier or code) corresponding to an external additional (an external identifier/code) but fails to find any assignment.
  
  External additional refers to an identifier/code coming from an external system or interface.
  Internal additional is the corresponding code or identifier used internally in SAP WM/EWM.
  The system expects a mapping between these two, but none exists for the given external additional &1 (where &1 is the placeholder for the actual external additional value).
  
  This typically happens during processes like goods receipt, goods issue, transfer postings, or any warehouse process involving external references.
  
  Common Causes:
  
  Missing or incomplete configuration: The external additional code has not been mapped to an internal additional in