How To Fix PU639 - Target system &1 in request &2 is not allowed

PU639 - Overview

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 639

• Message text: Target system &1 in request &2 is not allowed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PU639 - Target system &1 in request &2 is not allowed ?

  The SAP error message PU639 indicates that the target system specified in a transport request is not allowed for the current operation. This typically occurs during the transport of objects between different SAP systems (e.g., from a development system to a quality assurance or production system).
  
  Cause:
  
  Transport Route Configuration: The transport route may not be correctly configured in the Transport Management System (TMS). The target system may not be included in the allowed transport routes for the specific request.
  Transport Layer Settings: The transport layer associated with the transport request may not allow the target system.
  Authorization Issues: The user may not have the necessary authorizations to transport objects to the specified target system.
  Transport Request Type: The type of transport request (e.g., customizing, workbench) may not be allowed for the target system.
  
  
  Solution:
  
  
  Check Transport Routes:
  
  Go to the Transport Management System (TMS) configuration and verify the transport routes. Ensure that the target system is included