There is nothing reported by Meraki, so what you can try is, create the VLAN using createNetworkApplianceVlan with the basic parameters needed and then run an updateNetworkApplianceVlan call to set dhcpLeaseTime, dnsNameservers and any other advanced DHCP settings.
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
Please, if this post was useful, leave your kudos and mark it as solved.