Trying to implement SAML SSO 2.0 on Jira DC 8.5 / Confluence DC 7.4, my IDP asks me for a XML metadata file that contains a X509 certificate used to decrypt or confirm the signing, they can't register Jira/Confluence in their tool without this metadata file.
The only information I have for them are the 2 URLs "Assertion Consumer Service URL" and "Audience URL (Entity ID)" shown in SSO 2.0 configuration panel.
How do I generate such a metadata file ?