Application with identifier <App Bundle> is not associated with domain <www.some.com>

I am implementing passkeys for my Project. We hosted apple-app-site-association file in 2 different sites for my project maintenance. One is with ww.sitename.com and another is www3.sitename.com.

In Xcode adding each of them and testing individually. It's working good at first site and throwing error for second one like below

Application with identifier <> is not associated with domain <>

As you are using generic "site names" in your question, it is not possible to guess if there is anything specifically wrong.

Both "site names" you quoted are non-standard. Are you certain that your DNS records are not forwarding them to a location where the apple-app-site-association file cannot be found, or the information does not match?

Application with identifier &lt;App Bundle&gt; is not associated with domain &lt;www.some.com&gt;
 
 
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