Issue symptoms
I have a pre-filled ticket form so certain ticket fields are filled out automatically. When unauthenticated users click the link with the pre-filled URL parameters, they're prompted to sign in through SSO (single sign-on system). After signing in and returning to Zendesk, the extra parameters in the URL are removed and the ticket fields are not pre-filled.
Resolution steps
The pre-filled ticket form is incompatible with unauthenticated users in help centers using SSO authentication. For this workflow, end users should sign in before using the pre-filled ticket form.
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