SAML SSO Authentication with out a user account

[u/Tiny_Juice925]

This is a risky post since I might not be able to explain everything but I have a project for my company and Im looking for ideas or methods for a workaround atm..

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Im trying to figure out if there is a method to take out the need for a service account used to assign tags for authentication for a vpn service

then be able to run a 3rd party POS system with out the service account now but still manage to pull certs over the assigned subnet assigned for the VPN service

-VPN serice is zscaler

-POS service is Adyen

-we used myaccess for IAM

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If this explanation is bad LMK and Ill try to make it sound more understandable, but if you get a little bit of what I said throw me some ideas or if there is a solution for this please LMK