How To Fix VLA021 - Some selected deliveries already belong to a group in WM

VLA021 - Overview

• Message type: E = Error

• Message class: VLA - General Output Class for Delivery

• Message number: 021

• Message text: Some selected deliveries already belong to a group in WM

What causes this issue?

A delivery may belong to only one group per warehouse number in WM.

How to fix this error?

If you select the field <LS>Exclude existing groups in WM</>, you can
exclude the deliveries that are already assigned to a group in WM
according to the warehouse number given as a selection criterion. Then,
only deliveries that are not yet assigned to a group in WM for the
chosen warehouse number appear on the list.

Error message extract from SAP system. Copyright SAP SE.

VLA021 - Details

• The SAP error message VLA021, which states "Some selected deliveries already belong to a group in WM," typically occurs in the context of Warehouse Management (WM) when you are trying to process deliveries that are already assigned to a specific group in the system. This can happen during various operations, such as picking, packing, or transferring deliveries.
  
  Cause:
  The error is caused by the fact that the selected deliveries are already part of a group in the Warehouse Management system. In WM, deliveries can be grouped for various reasons, such as for picking or shipping. When you attempt to perform an action on these deliveries that would require them to be ungrouped or processed differently, the system prevents this to maintain data integrity.
  
  Solution:
  To resolve the VLA021 error, you can take the following steps:
  
  
  Check Group Assignment: Verify which group the deliveries belong to. You can do this by checking the delivery documents in