I'm trying to setup service discovery for our printers on the network using a CUPS bonjour tutorial. Specifically the record I'm trying to create is:

_ipp._tcp   PTR   m477fdw._ipp._tcp.i.example.com.

Every time I try to create this record in IPA I receive the error message:

Invalid 'ptrrecord': Reverse zone in-addr.arpa. requires exactly 4 IP address components, 5 given

Does IPA DNS just not support service discovery records or do I need to do something differently?
I'm using CentOS 7.6.1810 and IPA 4.6.4.

Steve