How To Fix LTBN021 - Node &1 is not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: LTBN - Bin Management's messages

• Message number: 021

• Message text: Node &1 is not valid

What causes this issue?

The chosen node is not valid due to at least one of the following
reasons:
It is not assigned to an intermediate zone (a zone other than a storage
zone).
It is not an entry node to an intermediate zone.
The node is blocked.

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

System Response

How to fix this error?

Do one of the following:
Choose a new destination.
Ask the warehouse manager to check if the node is blocked and, if it
is, to un-block it. If the node is not blocked, contact your system
administrator.

Procedure for System Administrators

Assign the node to an intermediate zone in IMG activity
<DS:SIMG.SIMG_LTBN001>Define Nodes and Entries/Exits to/from Zones</>.
If the node is already assigned to an intermediate zone, ensure that it
is an entry node to the zone.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LTBN021 - Node &1 is not valid ?

  The SAP error message LTBN021, which states "Node &1 is not valid," typically occurs in the context of the SAP Logistics Execution (LE) module, particularly when dealing with warehouse management or inventory management processes. This error indicates that the system is unable to recognize or validate the specified node (or location) in the warehouse structure.
  Causes:
  
  Invalid Node Reference: The node specified in the transaction or process does not exist in the system. This could be due to a typo or an incorrect node ID.
  Node Not Activated: The node may exist but is not activated or configured properly in the system.
  Master Data Issues: There may be issues with the master data related to the warehouse or storage locations.
  Transport or Configuration Issues: If the system has recently undergone changes, such as transports or configuration updates, the node may not have been included or properly set up.
  
  Solutions:
  
  Check Node ID: Verify the node ID specified in the error message. Ensure that it is correct and exists in the system.
  Activate Node: If the node exists but is not activated, you may need to activate it in the configuration settings of the warehouse management module.
  Review Master Data: Check the master data for the warehouse and ensure that all relevant nodes and locations are correctly defined and active.
  Transaction Logs: Review transaction logs or change logs to see if any recent changes might have affected the node's validity.
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the node configuration and requirements.
  Contact Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LT01, LT10, or LX01 that may be related to warehouse management processes.
  Configuration Settings: Review the configuration settings in the SAP IMG (Implementation Guide) under Logistics Execution > Warehouse Management to ensure that all nodes and locations are set up correctly.
  User Authorizations: Ensure that the user executing the transaction has the necessary authorizations to access the specified node.
  
  By following these steps, you should be able to identify the cause of the LTBN021 error and implement a solution to resolve it.