How To Fix OT421 - Reservation deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: OT - SAP Online Correction Support (SOCS)

• Message number: 421

• Message text: Reservation deleted

What causes this issue?

<ZH>Package Delivery Event</>
<ZK>Software component</>,,<ZK>PAKID</>,,&v1&
<ZK>Delivery event</>,,<ZK>ALEID</>,,&v2&

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OT421 - Reservation deleted ?

  The SAP error message OT421, which states "Reservation deleted," typically occurs when a reservation that was previously created in the system has been deleted. This can happen for various reasons, such as changes in inventory management, adjustments in production planning, or manual deletions by users.
  Causes:
  
  Manual Deletion: A user may have manually deleted the reservation through the SAP interface.
  Automatic Deletion: The system may have automatically deleted the reservation due to changes in the underlying data, such as changes in the material master or inventory levels.
  Data Consistency Issues: There may be inconsistencies in the data that lead to the deletion of the reservation.
  System Configuration: Certain configurations in the system may lead to the automatic deletion of reservations under specific conditions.
  
  Solutions:
  
  Check Reservation Status: Verify the status of the reservation in the system. You can do this by using transaction codes like MB22 (Change Reservation) or MB23 (Display Reservation) to see if the reservation still exists.
  Recreate the Reservation: If the reservation has been deleted and is still needed, you may need to recreate it. Use transaction code MB21 (Create Reservation) to create a new reservation.
  Review Change Logs: Check the change logs to see who deleted the reservation and why. This can help in understanding if it was a manual action or an automated process.
  Consult with Users: If the deletion was unexpected, consult with users or departments that may have access to the reservation to understand the context of the deletion.
  System Configuration Review: If automatic deletions are occurring, review the system configuration and settings related to reservations to ensure they align with business processes.
  Error Handling: Implement error handling procedures to manage and log such occurrences for future reference.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MB21, MB22, MB23, and MB24 for managing reservations.
  SAP Notes: Check SAP Notes for any known issues or patches related to reservation management that may address this error.
  User Permissions: Ensure that users have the appropriate permissions to create, modify, and delete reservations to prevent unauthorized deletions.
  Training: Provide training to users on how to manage reservations effectively to minimize accidental deletions.
  
  If the issue persists or if you need further assistance, consider reaching out to your SAP support team or consulting the SAP community for more specific guidance.