How To Fix CM_SERVICE_ADMIN403 - No systems are currently logged on at the SAP gateway

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_SERVICE_ADMIN - Service Administration

• Message number: 403

• Message text: No systems are currently logged on at the SAP gateway

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.

What else can you do?

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_SERVICE_ADMIN403 - No systems are currently logged on at the SAP gateway ?

  The SAP error message CM_SERVICE_ADMIN403: No systems are currently logged on at the SAP gateway typically indicates that there are no active connections to the SAP Gateway from the systems that are supposed to be connected. This can occur in various scenarios, such as when trying to access services or perform operations that require a connection to the SAP system.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP Gateway and the connected systems.
  Gateway Configuration: The SAP Gateway may not be properly configured to accept connections from the systems.
  System Down: The SAP system that you are trying to connect to may be down or not running.
  Authorization Issues: The user may not have the necessary authorizations to connect to the SAP Gateway.
  Service Not Running: The required services on the SAP system or Gateway may not be running.
  Firewall Restrictions: Firewalls may be blocking the necessary ports for communication.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the SAP Gateway and the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify Gateway Configuration: Check the configuration of the SAP Gateway to ensure it is set up correctly to accept connections. This includes checking the sapgw<instance number> service in the services file and ensuring the gateway is running.
  Check System Status: Verify that the SAP system you are trying to connect to is up and running. You can check the system status in the SAP Management Console (SAP MMC) or through transaction codes like SM51 or SM66.
  Review Authorizations: Ensure that the user account being used has the necessary authorizations to connect to the SAP Gateway. You may need to check roles and profiles assigned to the user.
  Restart Services: If the required services are not running, restart them. This can be done through the SAP Management Console or using transaction codes like SMMS for managing instances.
  Check Firewall Settings: Ensure that any firewalls between the systems are configured to allow traffic on the necessary ports (typically port 3300 for the SAP Gateway).
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the error message for any specific patches or updates that may address the issue.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues faced by other users and potential solutions.
  Logs: Review the SAP Gateway logs (found in the dev_gw log file) for any additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.