How To Fix TN808 - Queue not calculated due to missing maintenance certificate

TN808 - Overview

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 808

• Message text: Queue not calculated due to missing maintenance certificate

What causes this issue?

Attempted to define a queue that contains OCS Package &V1& delivered by
SAP. This failed as no valid maintenance certificate was found in the
system.

How to fix this error?

Install a valid maintenance certificate and repeat the queue
calculation.
Background Information
As of 2009, maintenance certificates are required to be able to install
and maintain SAP software with the Add-On Installation Tool and Support
Package Manager. These maintenance certificates can be requested with
SAP Solution Manager and are distributed to the systems automatically.
For more information, see the SAP Support Portal under
http://service.sap.com/maintenancecertificate and SAP Note 1240265.
Component SV-SMG-LIC is also available for reporting an problems or any
further questions.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TN808 - Queue not calculated due to missing maintenance certificate ?

  The SAP error message TN808, which states "Queue not calculated due to missing maintenance certificate," typically occurs in the context of transportation management or logistics within the SAP system. This error indicates that the system is unable to calculate the transportation queue because it lacks the necessary maintenance certificate for the relevant transportation lane or route.
  
  Cause:
  
  Missing Maintenance Certificate: The primary cause of this error is that the maintenance certificate for the transportation lane or route has not been created or is not valid. This certificate is essential for the system to perform calculations related to transportation planning and execution.
  
  Configuration Issues: There may be configuration issues in the transportation management module that prevent the system from recognizing the maintenance certificate.
  Data Inconsistencies: Inconsistencies in master data related to transportation lanes, routes, or vehicles can also lead to this error.
  
  
  Solution:
  
  
  Check Maintenance Certificate:
  
  Navigate to the relevant transaction in SAP (e.g., transaction code SPRO for