Dear StarlingX team

When I create openstack as below.

controller-0:~$ openstack network create --project ${ADMINID} --provider-network-type=flat --provider-physical-network=phy-flat netflat
Error while executing command: BadRequestException: 400, Invalid input for operation: Flat provider networks are disabled.

I get  "Flat provider networks are disabled" message, so I check  neutron server pod log message.
I cant understand " it is either malformed or otherwise incorrect " message.

------------------------------neutron server log message-----------------------------------
2019-11-29 09:10:01.840 15 INFO neutron.pecan_wsgi.hooks.translation [req-11f095b7-3785-4f2d-b686-63fa8be8894e 13a0469767aa4b3898fc617ca48dc17f 5dc1e20a2d4f41718169b48b3dc47f91 - default default] POST failed (client error): The server could not comply with the request since it is either malformed or otherwise incorrect.

2019-11-29 09:10:01.840 15 INFO neutron.pecan_wsgi.hooks.translation [req-11f095b7-3785-4f2d-b686-63fa8be8894e 13a0469767aa4b3898fc617ca48dc17f 5dc1e20a2d4f41718169b48b3dc47f91 - default default] POST failed (client error): The server could not comply with the request since it is either malformed or otherwise incorrect.

2019-11-29 09:10:01.861 15 INFO neutron.wsgi [req-11f095b7-3785-4f2d-b686-63fa8be8894e 13a0469767aa4b3898fc617ca48dc17f 5dc1e20a2d4f41718169b48b3dc47f91 - default default] 10.100.37.32 "POST /v2.0/networks HTTP/1.1" status: 400  len: 344 time: 0.1304631

2019-11-29 09:10:01.861 15 INFO neutron.wsgi [req-11f095b7-3785-4f2d-b686-63fa8be8894e 13a0469767aa4b3898fc617ca48dc17f 5dc1e20a2d4f41718169b48b3dc47f91 - default default] 10.100.37.32 "POST /v2.0/networks HTTP/1.1" status: 400  len: 344 time: 0.1304631
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Best Regards
Ting