Master of Master and Smart Proxy Error 406 Not acceptable


I’m making a architecture of a Master of Master with full installation of foreman and proxy, under this have 2 other master zone with full install of foreman, i want to add my zone master proxy to the master of master. I generate certificate from the MoM and copied it to the other master. i successfully add smart proxies to my MoM but get error in Puppet CA part:

ca.pem are the same on my proxies and master. don’t knows why i got this error

Faillure: ERF50-5345 [Foreman:WrappedException]: Unable to connect [ProxyAPI::ProxyException]:ERF12-5356[ProxyAPI::ProxyException]: Unable to get PuppetCA certificates [RestClient::NotAcceptable]: 406 Not Acceptable for proxy <fqdn>/puppet/ca

When i restart my foreman proxy a got this in logs
X509v3 Basic Constraints critical

Thank for your help