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Basis SAP

Troubleshooting – OAuth 2.0 NW ABAP token service return HTTP 500 Internal Server Error

Problem After sending a request to the access token endpoint /sap/bc/sec/oauth2/token you get an internal server error 500. Investigation Tx: SA38 Program: SEC_TRACE_ANALYZER Run program. Select OAuth varian: click on Get Variants Click on Activate Trace is active. Reproduce the issue. The log trace for the user will show the Read more…

By Tobias Hofmann, 4 yearsMay 12, 2020 ago

Basis SAP Security

Troubleshooting – Access token not issued due to missing signing of Message Assertion

Scenario You send a SAML Bearer Assertion to the OAuth token service of SAP Gateway. The Return type is 400 Bad Request. Error message { “error”: “invalid_grant”, “error_description”: “Provided authorization grant is invalid. Exception was Message Assertion is not signed. For more information, consult the kernel traces or the OAuth 2.0 trouble shooting SAP note 1688545” } Root cause The error message contains a description of the root cause for the HTTP 400: “Exception was Message Assertion is not Read more…

By Tobias Hofmann, 4 yearsMay 4, 2020 ago