On answering the channel when a call enters the Stasis App I create a new channel for "SIP/8312453028" with app "test" and then place the dial function to initiate the call with newly created channel id. I get the call on SIP/8312453028, then I answered but there are no media between both clients.
Workflow is given below:

orig := &ari.ChannelCreateRequest{Endpoint: "SIP/8312453028", App: "test"}
channel, err1 := h.Create(*orig)
if err1 != nil {
log.Error("Failed to Create Channel", "error", err1)
return
}
err2 := channel.Dial(channel.ID(), 30)
if err2 != nil {
log.Error("Failed to Dial Call", "error", err2)
return
}

return

The console error I received:

EROR[07-15|16:04:20] failed to answer call error="Non-2XX response: 412 Precondition Failed"

It would be helpful if you guide more about it. Thanks.