How To Fix BE404 - Item &: reservation document item &/& already created

BE404 - Overview

• Message type: E = Error

• Message class: BE - General document entry

• Message number: 404

• Message text: Item &: reservation document item &/& already created

What causes this issue?

You cannot reference a reservation item which has already been
flagged as complete.

System Response

Processing stopped.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BE404 - Item &: reservation document item &/& already created ?

  The SAP error message BE404 indicates that a reservation document item has already been created for the specified item in the system. This typically occurs when there is an attempt to create a reservation for an item that already has an existing reservation.
  
  Cause:
  
  Duplicate Reservation Attempt: The most common cause is that the user is trying to create a reservation for an item that has already been reserved.
  System Configuration: There may be specific configurations or settings in the system that prevent multiple reservations for the same item.
  User Error: The user may not be aware that a reservation already exists for the item, leading to an attempt to create a duplicate.
  
  
  Solution:
  
  Check Existing Reservations: Before creating a new reservation, check if there is already a reservation for the item. You can do this by using transaction codes like MB22 (Change Reservation) or MB23 (Display Reservation) to view existing reservations.
  Modify Existing Reservation: If a