Creates a time condition on your account and returns its identifiers — note that success is 200, not 201. The ID, extension number and routing entry are all assigned for you; any field in the body other than the four below is ignored. If the rules include holiday matches, an automatic cleanup is scheduled for three days after the last holiday ends. Creation is not atomic: if the routing entry fails to be written, the condition row can still exist, and the call returns 400.