How To Fix WTADDI412 - Material & is not an additional

WTADDI412 - Overview

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 412

• Message text: Material & is not an additional

What causes this issue?

You are entering <GL:additional>additionals</> for a
<GL:material>material</>. You can only choose a material for use as an
additional if its <DS:GLOS.material_type>material type</> has been
flagged for such use.
The material you have entered (&V1&) does not have this flag.

How to fix this error?

Find the additional by means of the matchcode for the material type,
making sure that you enter a material type that is defined for use as
an additional.

Error message extract from SAP system. Copyright SAP SE.

WTADDI412 - Details

• The SAP error message:
  WTADDI412: Material & is not an additional
  
  
  Cause:
  This error occurs in the Warehouse Management (WM) module when you try to add a material as an "additional" material in a warehouse task or transfer order, but the system does not recognize the material as an additional material for the relevant handling unit or warehouse process.
  In SAP WM, "additional materials" are materials that can be packed together with the main material in a handling unit or warehouse task. The system expects that the material you are trying to add is flagged or configured as an additional material in the system, but it is not.
  
  When does it occur?
  
  When creating or processing warehouse tasks or transfer orders involving handling units.
  When trying to add a material to a handling unit as an additional material, but the material is not defined or allowed as such.
  During packing or unpacking processes in WM.
  
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Verify