Changes since SOA version
IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.
Not an apex domain
The domain he-sipfed.p04.ic3-interop-hybridedge.usgovtexas-gcch.cosmic-gcch.office365.us is not the root of its zone.
Instead, try zone transfer on usgovtrafficmanager.net .
Instead, try zone transfer on usgovtrafficmanager.net .