How To Fix WTADDI429 - No message category exists for additional &1 (material group &2)

WTADDI429 - Overview

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 429

• Message text: No message category exists for additional &1 (material group &2)

What causes this issue?

If you want to create an additionals IDoc, the system must recognize
the relevant message category for each additional. The message category
is used to determine the quantity of data to be selected.

System Response

Without the message category, the system cannot create an IDoc.

How to fix this error?

Determine the material group of additional &V1&. Then maintain the
logical message category for this
<DS:SIMG.W_DF_LT_0203.SIMG_LAB>material group</> in Customizing for the
additional.
INCLUDE ISR_CUSTOMIZING

Error message extract from SAP system. Copyright SAP SE.

WTADDI429 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WTADDI429 No message category exists for additional &1 (material group &2)
  
  
  Cause:
  This error occurs during the creation or processing of a delivery or shipment when the system tries to determine the message category for an additional message related to a specific material group, but no message category has been maintained or assigned for that combination.
  
  &1 = Additional message type or identifier  
  &2 = Material group
  
  In other words, the system is looking for a message category configuration for a particular additional message and material group but cannot find it in the customizing settings.
  
  When does it occur?
  
  When output messages (like delivery notes, shipping notifications, etc.) are generated and the system tries to find the correct message category for additional messages linked to material groups.
  Typically during delivery processing, shipment creation, or output determination steps.
  
  
  
  Solution:
  To resolve this error, you need to maintain the