How To Fix GW018 - External security files were reread

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 018

• Message text: External security files were reread

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message GW018 - External security files were reread ?

  The SAP error message GW018 ("External security files were reread") typically occurs in the context of SAP Gateway and is related to the security settings and configurations for external services. This message indicates that the system has detected a change in the external security files, which may include changes to user authorizations, roles, or other security-related configurations.
  Cause:
  
  Changes in Security Files: The error is triggered when there are modifications to the external security files that the SAP Gateway relies on. This could be due to updates in user roles, permissions, or other security settings.
  System Configuration Changes: Changes in the system configuration or updates to the SAP Gateway settings can also lead to this message being displayed.
  Manual Reread: Sometimes, administrators may manually trigger a reread of the security files, which can lead to this message being logged.
  
  Solution:
  
  Check Security Files: Review the external security files to ensure that they are correctly configured and that any recent changes are valid.
  Reread Security Files: If you are an administrator, you can manually trigger the reread of the security files to ensure that the system is using the latest configurations. This can typically be done through transaction codes like SICF or SPRO.
  Restart Gateway Services: In some cases, restarting the SAP Gateway services may help in resolving the issue.
  Check Logs: Review the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of SAP you are using for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to the GW018 error message. SAP frequently updates its knowledge base with solutions to common issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  System Administration: Ensure that your system administration team is aware of any changes made to security configurations, as these can impact the functioning of the SAP Gateway.
  
  If the issue persists after following these steps, it may be necessary to engage SAP support for further assistance.