topic Re: SAML SSO 400 Error 'action' parameter must be specified in Splunk AppDynamics

SAML SSO 400 Error 'action' parameter must be specified

Caleb_Ardern — Mon, 29 Jun 2020 05:02:46 GMT

Hello,

I have configured my service provider as per the following config.
SAML Authentication - 4.4.x Documentation - AppDynamics Documentation

Below is the error i get. The weird thing is there is no 'action' parameter meant to exist in the SAML 2.0 protocol

HTTP Status 400 - 'action' parameter must be specified

type Status report

message'action' parameter must be specified

descriptionThe request sent by the client was syntactically incorrect.

AppDynamics

Re: SAML SSO 400 Error 'action' parameter must be specified

iamryan — Mon, 29 Jun 2020 16:39:05 GMT

Hi @Caleb.Ardern,

Thanks for your post on the community. I see you were looking at 4.4x documentation, here is a newer version of that document. https://docs.appdynamics.com/display/PRO45/Configure+Basic+SAML+Authentication

Please follow backup if you experience a different outcome with the latest documentation.

Re: SAML SSO 400 Error 'action' parameter must be specified

Morelz — Sun, 05 Jul 2020 09:29:17 GMT

Hi Caleb

Could you provide some more info around what you are setting up..

1. What SAML Provider are you using, Azure Ad etc.?

2. Can you document a step by step setup procedure you followed?

3. I am assuming you are getting that error, after authenticating with your SAML IdP, when the IDP provider posts back the response to AppDynamics?

TO check this, you can install a SAML tracing extension in your browser, and then you can have a look at what SAML posts are being generated, that will significantly help in understanding where the problem is.