This video explains the step-by-step process on how to collect SAML traces.

For further information, refer to the following KB article:
https://knowledge.informatica.com/s/article/HOW-TO-debug-SAML-SSO-calls-and-capture-SAML-Tracer-Output-in-Informatica-Cloud?language=en_US

SAML tracer browser Extensions:
Chrome- https://chrome.google.com/webstore/detail/saml-tracer/mpdajninpobndbfcldcmbpnnbhibjmch/related?hl=en
Firefox- https://addons.mozilla.org/en-US/firefox/addon/saml-tracer/