How To Fix GW756 - Logon of the registered server via saprouter is not permitted

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 756

• Message text: Logon of the registered server via saprouter is not permitted

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 GW756 - Logon of the registered server via saprouter is not permitted ?

  The SAP error message GW756 indicates that there is an issue with the logon of a registered server via the SAProuter. This error typically arises when the SAProuter is not configured correctly or when there are restrictions on the connection.
  Cause:
  
  SAProuter Configuration: The SAProuter may not be configured to allow connections from the specific server or client.
  Authorization Issues: The user or system trying to connect may not have the necessary permissions to access the server through the SAProuter.
  Network Restrictions: Firewalls or network policies may be blocking the connection.
  Incorrect SAProuter String: The SAProuter string used to connect may be incorrect or incomplete.
  
  Solution:
  
  
  Check SAProuter Configuration:
  
  Verify the saprouttab file on the SAProuter. Ensure that the entries allow the connection from the client/server you are trying to access.
  The entry should look something like this:
  P <client_ip> <server_ip> <port>
  
  Make sure that the IP addresses and ports are correctly specified.
  
  
  
  Review Authorization:
  
  Ensure that the user credentials being used have the necessary permissions to log in through the SAProuter.
  Check the user roles and authorizations in the SAP system.
  
  
  
  Network Configuration:
  
  Check if there are any firewalls or network policies that might be blocking the connection. Ensure that the necessary ports are open for communication.
  If applicable, consult with your network administrator to verify that the connection is allowed.
  
  
  
  Validate SAProuter String:
  
  Ensure that the SAProuter string used in the connection is correct. It should follow the format:
  /H/<saprouter_host>/S/<saprouter_service>
  
  Double-check for any typos or incorrect parameters.
  
  
  
  Test Connection:
  
  Use the saprouter command to test the connection manually. This can help identify if the issue is with the SAProuter or the client/server configuration.
  
  
  
  Consult SAP Documentation:
  
  Refer to the official SAP documentation for more detailed information on configuring SAProuter and troubleshooting connection issues.
  
  
  
  Related Information:
  
  SAProuter: A tool that acts as a gateway for communication between SAP systems and clients, often used in scenarios where direct connections are not possible due to network restrictions.
  SAP Notes: Check SAP Notes for any known issues or patches related to the GW756 error.
  Logs: Review the logs on both the SAProuter and the SAP system for any additional error messages that might provide more context.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.