How To Fix WG020 - Default for document category & not valid. Value reset

WG020 - Overview

• Message type: E = Error

• Message class: WG - Messages for store order and investment buy

• Message number: 020

• Message text: Default for document category & not valid. Value reset

What causes this issue?

The specified document category is not maintained as a default and
therefore not permitted.
Only those values are permitted that can be defined in the "store order
control".

System Response

The system sets the default value.

How to fix this error?

Maintain the <DS:SIMG.W_DF_VK_0131.SIMG_OPOS>store order control</> if
necessary.
INCLUDE ISR_CUSTOMIZING

Error message extract from SAP system. Copyright SAP SE.

WG020 - Details

• SAP Error Message:
  WG020 - Default for document category & not valid. Value reset
  
  Meaning / 
  Cause:
  This error occurs when the system tries to assign a default document category (e.g., for a goods movement or delivery document) that is not valid or not maintained in the current context. The placeholder "&" in the message is replaced by the document category code that is invalid.
  In other words, the system is trying to use a default document category that either:
  
  Does not exist in the customizing settings.
  Is not allowed for the particular transaction or movement type.
  Has been deleted or incorrectly configured.
  The user or process is trying to use a document category that is not valid for the document type or movement type.
  
  
  Where it typically occurs:
  
  In Inventory Management (IM) or Warehouse Management (WM) when posting goods movements.
  During delivery processing or outbound/inbound delivery creation.
  When customizing or using movement types and their associated document categories.
  When default values are