How To Fix LESI001 - Activate either a link to external system or to TRM

SAP Error Message - Details

• Message type: E = Error

• Message class: LESI - Messages for LES-TRM Interface package

• Message number: 001

• Message text: Activate either a link to external system or to TRM

What causes this issue?

You tried to activate the interface to an external subsystem and the
interface to Task and Resource Management (TRM).

System Response

The system only allows a clear relationship between LES and TRM.

How to fix this error?

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

Procedure for System Administrators

If you want to use TRM together with an external system, the external
subsystem must only be allowed to confirm one step (removal or
transport) of the transfer order. If the external subsystem confirms
both steps, TRM cannot be activated in addition.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LESI001 - Activate either a link to external system or to TRM ?

  The SAP error message LESI001 typically occurs in the context of the Logistics Execution System (LES) when there is an issue with the integration between SAP and an external system or when the Transportation Management (TRM) module is not properly configured or activated.
  Cause:
  
  Missing Configuration: The error often arises when the system is not configured to link to an external system (like a third-party logistics provider) or to the Transportation Management module.
  Inconsistent Settings: There may be inconsistencies in the settings related to the logistics execution processes, such as missing parameters or incorrect settings in the configuration.
  System Integration Issues: If the system is expected to communicate with an external system, there may be issues with the connection or the necessary middleware not being set up correctly.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the SAP Customizing Implementation Guide (IMG) and navigate to the relevant sections for Logistics Execution and Transportation Management.
  Ensure that the necessary settings for linking to external systems or TRM are properly configured.
  
  
  
  Activate TRM:
  
  If you intend to use the Transportation Management module, ensure that it is activated in your system. This can typically be done through the IMG by navigating to the relevant settings for Transportation Management.
  
  
  
  Link to External System:
  
  If you are supposed to link to an external system, verify that the connection parameters are correctly set up. This may involve checking RFC connections, middleware settings, or any relevant integration settings.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the error message for any specific instructions or additional troubleshooting steps.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to access the relevant transactions and configurations.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the configurations and settings, consider reaching out to SAP support for further assistance. They may provide specific notes or patches that address the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (for configuration), SE37 (for function modules), and SM59 (for RFC connections).
  SAP Notes: Search for SAP Notes related to the error message LESI001 in the SAP Support Portal for any known issues or fixes.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the LESI001 error and implement the necessary solutions to resolve it.