Client Credentials grant type for Inbound OAuth is supportedSummaryUntil the Washington release, ServiceNow did not support the use of the "Client Credentials" grant type for inbound OAuth requests. The client credentials grant type operates based on application-level access. By design, in ServiceNow, every request is tied to a user. Therefore, using a grant type that operates based on application-level access was not supported. However, starting from the Washington release, ServiceNow has introduced an option to support the "Client Credentials" grant type by linking it to a user in the OAuth Entity record.ReleaseWashingtonInstructions Inbound client credentials grant type is a capability that can be controlled through a system property. By default the system property is false. To use the client credentials grant type, you must perform the following steps: Create the glide.oauth.inbound.client.credential.grant_type.enabled system property. Name: glide.oauth.inbound.client.credential.grant_type.enabled Type: true|false Value: true Below are the steps to configure the "Client Credentials" grant type for inbound OAuth requests. 1. Navigate to "System OAuth -> Application Registry." 2. Click on "New." 3. Click on "Create an OAuth API endpoint for external clients." 4. Configure the name. 5. Select "Client Credentials" as the "Default Grant Type." 6. Click on the magnifying glass in "OAuth Application User" to look up a user from the list. 7. Select the integration user record. 8. Click on "Save." The setup is ready. We can use POSTMAN or any equivalent tool to test this configuration. We have tested this using POSTMAN; please find the screenshot below. Related LinksRefer below documentation for more information: https://docs.servicenow.com/bundle/washingtondc-platform-security/page/integrate/authentication/concept/client-credentials.html