SSO Issue

Hi,

I'm trying to implement SAML SSO for a client and I'm getting the error:

"Possible replay attack occurred as there is no login/logout information associated with this request."

Code:

<cfset config = {
idp = {name = "ClientName"},
sp = {name = "TestSP"},
relayState = "cart"
}>

<cfset InitSAMLAuthRequest(config)>

<cfset response = ProcessSAMLResponse("ClientName","TestSP")>

<cfdump var="#response#">

The SP config is simple and shown in the image. The IDP is using a SAML URL from the client.

I've not been able to find any info on this error. Can anyone provide some suggestions? I'm hoping I'm doing something obviously wrong.

Thanks,

Dom