How To Fix L3644 - Pick-HU &1 is already assigned to TO &2 and delivery &3

L3644 - Overview

• Message type: E = Error

• Message class: L3 -

• Message number: 644

• Message text: Pick-HU &1 is already assigned to TO &2 and delivery &3

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message L3644 - Pick-HU &1 is already assigned to TO &2 and delivery &3 ?

  The SAP error message L3644 indicates that a Handling Unit (HU) is already assigned to a Transfer Order (TO) and a delivery. This typically occurs in the context of warehouse management and logistics processes where handling units are used to manage inventory and shipments.
  
  Cause:
  The error arises when you attempt to assign a handling unit (HU) that is already linked to a specific transfer order (TO) and delivery. This can happen due to several reasons:
  
  Duplicate Assignment: The same HU is being processed for multiple transfer orders or deliveries.
  System Configuration: There may be issues with the configuration of the warehouse management system that allows for incorrect assignments.
  User Error: A user may inadvertently try to assign an HU that is already in use.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Current Assignments:
  
  Use transaction codes like HU02 (Display Handling Unit) to check the current status and assignments of the handling unit in