OIC - Oauth initiation error at runtime - Access token is not available. Please re-initiate the oauth flow to obtain an access token | Provide consent issue.

Use Case: OAuth Authentication Failure in Oracle Integration Cloud (OIC)

Scenario:

An OIC integration flow that connects to an external REST API using OAuth authentication encounters an error:

Error Code: REST_AUTH_INIT_ERR

Error Message: "OAuth initiation error at runtime. Access token is not available. Please re-initiate the OAuth flow to obtain an access token. This indicates that OIC is unable to obtain or refresh the OAuth access token, leading to authentication failure.

Detailed Error Details:

<fault xmlns="http://xmlns.oracle.com/cloud/oic/gen3fault"> <trace Id>42c1b064a7ee002c7fd445e94f7429cc</traceId><requestId>IFIKKU95FTG26XUAYGUIOGA962D61JU2/03E977E96A93EE7EBDCE38C05CA6119E/3760E5ED3B4A4E18AA92084886501BC9</requestId><errorId/><flowId>UUzyG9_VEe-qZTGEjn7VoQ </flowld><errorType>InternalError</errorType><origin>tech-adapters-7569567778-z8qrn</origin><errorCode>REST_AUTH_INIT_ERR</errorCode><faultName> ns0: Server/faultName><retriable>false</retriable><reason>OAuth initiation error at runtime.</reason><details> <details minn="">Fault Details: <genericRestFault><errorCode>REST_AUTH_INIT_ERR</errorCode><error Path>Access token is not available. Please re-initiate the oauth flow to obtain an access token.</errorPath><instance>OAuth initiation error at runtime.</instance></genericRestFault></detailn></details></fault>

Solution steps:

1. Verify & Test Connection

Go to OIC Home → Integrations → Connections and test the REST connection.

If it fails, re-enter the Client ID, Client Secret, and Token URL.

2. Provide OAuth Consent

Log in to the OIC console using a user account with the necessary permissions to provide consent. Edit the connection causing the issue, click on Provide Consent, and it should display as authenticated.

3. Reactivate the integration.