How To Fix GW904 - Remote gateways

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 904

• Message text: Remote gateways

What causes this issue?

This MTE node gives information about how many connections on the
gateway in question exist to remote gateways.

How to fix this error?

If the value is near 100%, the maximum number of clients can be changed
using the profile parameter <ZH>rdisp/max_gateways</> (see the
parameter documentation in RZ11).

Procedure for System Administrators

To administrate gateway connections, call transaction SMGW on the server
in question.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GW904 - Remote gateways ?

  The SAP error message GW904 typically indicates an issue related to the SAP Gateway, specifically concerning remote gateway connections. This error can occur in various scenarios, such as when trying to access remote systems or when there are issues with the configuration of the SAP Gateway.
  Cause:
  
  Network Issues: There may be network connectivity problems between the SAP system and the remote gateway.
  Configuration Errors: Incorrect configuration of the RFC (Remote Function Call) destination or the gateway settings can lead to this error.
  Authorization Issues: The user may not have the necessary authorizations to access the remote gateway.
  Gateway Service Not Running: The SAP Gateway service on the remote system may not be active or properly configured.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection to the remote gateway.
  
  Solution:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination: Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that the connection parameters are correct and that the destination is set up properly.
  Check Gateway Configuration: Ensure that the gateway is correctly configured on both the local and remote systems. This includes checking the gw/host and gw/service parameters in the instance profile.
  User Authorizations: Verify that the user has the necessary authorizations to access the remote gateway. You can check this in transaction SU01 or PFCG.
  Check Gateway Service: Ensure that the SAP Gateway service is running on the remote system. You can check this using transaction SMGW.
  Firewall Settings: If applicable, check the firewall settings to ensure that they are not blocking the required ports for SAP Gateway communication (typically port 3300 for the gateway).
  Review Logs: Check the system logs (transaction SM21) and the gateway logs (transaction SMGW) for any additional error messages that may provide more context.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the GW904 error.
  Documentation: Review the SAP Gateway documentation for detailed information on configuration and troubleshooting.
  Community Forums: Consider checking SAP Community forums or other online resources for similar issues and solutions shared by other users.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.