How To Fix /SCWM/UI138 - Warehouse task exists already (internally) for HU &1

/SCWM/UI138 - Overview

• Message type: E = Error

• Message class: /SCWM/UI -

• Message number: 138

• Message text: Warehouse task exists already (internally) for HU &1

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/UI138 - Warehouse task exists already (internally) for HU &1 ?

  The SAP error message /SCWM/UI138 Warehouse task exists already (internally) for HU &1 typically occurs in the SAP Extended Warehouse Management (EWM) module when there is an attempt to create a warehouse task (WT) for a Handling Unit (HU) that already has an existing warehouse task associated with it. This can happen in various scenarios, such as during the picking, putaway, or stock transfer processes.
  
  Cause:
  
  Duplicate Warehouse Task: The most common cause is that a warehouse task for the specified handling unit already exists in the system. This can happen if the system is trying to create a new task for an HU that is already being processed or has an active task.
  System Lag: Sometimes, due to system performance issues or delays, the system may not recognize that a task has been completed or canceled, leading to the perception that a task still exists.
  Incorrect Process Flow: If the warehouse processes are