I am again managing a BIND installation with manual edits of the zone files.
After performing an update of adding one A record to a forward file and the corresponding PTR to a reverse file I asked a peer to review to ensure I did nothing stupid in the edits (never underestimate the ability to miss a trailing. or incorrect serial). He has rejected my updates because the zone files have the same serial (2017100201) he says they must be unique to each other - IE, one can be 2017100201 but then the other should be 2017100202.
Not having any fun finding reference to something that I've never heard of before. I really don't want to assign incremented serials to each zone updated - who has a reference on this?