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 uom-web02.uom-7329.saas.squiz.cloud is not the root of its zone.
Instead, try zone transfer on uom-7329.saas.squiz.cloud .
Instead, try zone transfer on uom-7329.saas.squiz.cloud .