HTTP error (422 - Unknown): Validation failed: Name has already been taken

Here is the OS list, same info in UI.

# hammer os list
---|-----------------------|--------------|-------
ID | TITLE                 | RELEASE NAME | FAMILY
---|-----------------------|--------------|-------
2  | CentOS 7              |              | Redhat
3  | CentOS 7.7.1908       |              | Redhat
1  | CentOS Linux 7.8.2003 |              | Redhat
4  | CentOS Linux 7.9.2009 |              | Redhat
---|-----------------------|--------------|-------

Here are the facts for the problematic machine:

cpu.core(s)_per_socket: 4
cpu.cpu(s): 4
cpu.cpu_socket(s): 1
cpu.thread(s)_per_core: 1
cpu.topology_source: kernel /sys cpu sibling lists
distribution.id: Core
distribution.name: CentOS Linux
distribution.version: 7
distribution.version.modifier: Unknown
dmi.baseboard.manufacturer: Microsoft Corporation
dmi.baseboard.product_name: Virtual Machine
dmi.baseboard.serial_number: 0886-3116-9651-2414-9543-9590-55
dmi.baseboard.version: Hyper-V UEFI Release v1.0
dmi.bios.bios_revision: 1.0
dmi.bios.relase_date: 11/26/2012
dmi.bios.rom_size: 64 KB
dmi.bios.runtime_size: Unknown
dmi.bios.vendor: Microsoft Corporation
dmi.bios.version: Hyper-V UEFI Release v1.0
dmi.chassis.asset_tag: 0886-3116-9561-2414-9543-9590-55
dmi.chassis.boot-up_state: Safe
dmi.chassis.lock: Not Present
dmi.chassis.manufacturer: Microsoft Corporation
dmi.chassis.power_supply_state: Safe
dmi.chassis.security_status: Unknown
dmi.chassis.serial_number: 0886-3116-9561-2414-9543-9590-55
dmi.chassis.thermal_state: Safe
dmi.chassis.type: Desktop
dmi.chassis.version: Hyper-V UEFI Release v1.0
dmi.memory.array_handle: 0x0009
dmi.memory.assettag: None
dmi.memory.bank_locator: None
dmi.memory.data_width: Unknown
dmi.memory.error_correction_type: None
dmi.memory.error_information_handle: No Error
dmi.memory.form_factor: Unknown
dmi.memory.location: System Board Or Motherboard
dmi.memory.locator: M0001
dmi.memory.manufacturer: Microsoft Corporation
dmi.memory.maximum_capacity: 2048 GB
dmi.memory.part_number: None
dmi.memory.serial_number: None
dmi.memory.size: 3968 MB
dmi.memory.speed:   (ns)
dmi.memory.total_width: Unknown
dmi.memory.type: Unknown
dmi.memory.use: System Memory
dmi.meta.cpu_socket_count: 4
dmi.processor.asset_tag: None
dmi.processor.family: Xeon
dmi.processor.part_number: None
dmi.processor.serial_number: None
dmi.processor.socket_designation: None
dmi.processor.status: Populated:Enabled
dmi.processor.type: Central Processor
dmi.processor.upgrade: None
dmi.processor.version: Intel(R) Xeon(R) Gold 6142 CPU @ 2.60GHz
dmi.processor.voltage: 0,9 V
dmi.system.family: Virtual Machine
dmi.system.manufacturer: Microsoft Corporation
dmi.system.product_name: Virtual Machine
dmi.system.serial_number: 0886-3116-9561-2414-9543-9590-55
dmi.system.sku_number: None
dmi.system.status: No errors detected
dmi.system.uuid: 0782e99d-ee3e-4fbe-88b4-d56f28602b2a
dmi.system.version: Hyper-V UEFI Release v1.0
dmi.system.wake-up_type: Power Switch
foreman_location: HR2
last_boot: 2020-10-03 21:04:00
lscpu.architecture: x86_64
lscpu.bogomips: 5187.80
lscpu.byte_order: Little Endian
lscpu.core(s)_per_socket: 4
lscpu.cpu(s): 4
lscpu.cpu_family: 6
lscpu.cpu_mhz: 2593.904
lscpu.cpu_op-mode(s): 32-bit, 64-bit
lscpu.flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single ssbd ibrs ibpb stibp fsgsbase bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx avx512f avx512dq rdseed adx smap clflushopt avx512cd avx512bw avx512vl xsaveopt xsavec spec_ctrl intel_stibp flush_l1d
lscpu.hypervisor_vendor: Microsoft
lscpu.l1d_cache: 32K
lscpu.l1i_cache: 32K
lscpu.l2_cache: 1024K
lscpu.l3_cache: 22528K
lscpu.model: 85
lscpu.model_name: Intel(R) Xeon(R) Gold 6142 CPU @ 2.60GHz
lscpu.numa_node(s): 1
lscpu.numa_node0_cpu(s): 0-3
lscpu.on-line_cpu(s)_list: 0-3
lscpu.socket(s): 1
lscpu.stepping: 4
lscpu.thread(s)_per_core: 1
lscpu.vendor_id: GenuineIntel
lscpu.virtualization_type: full
memory.memtotal: 10037016
memory.swaptotal: 1048572
net.interface.eth0.ipv4_address: 10.26.34.14
net.interface.eth0.ipv4_address_list: 10.26.34.14
net.interface.eth0.ipv4_broadcast: 10.26.34.255
net.interface.eth0.ipv4_broadcast_list: 10.26.34.255
net.interface.eth0.ipv4_netmask: 24
net.interface.eth0.ipv4_netmask_list: 24
net.interface.eth0.mac_address: DA:00:01:00:00:88
net.interface.lo.ipv4_address: 127.0.0.1
net.interface.lo.ipv4_address_list: 127.0.0.1
net.interface.lo.ipv4_broadcast: Unknown
net.interface.lo.ipv4_broadcast_list: Unknown
net.interface.lo.ipv4_netmask: 8
net.interface.lo.ipv4_netmask_list: 8
network.fqdn: server-1.domain.local
network.hostname: server-1
network.ipv4_address: 10.26.34.14
network.ipv6_address: ::1
proc_cpuinfo.common.address_sizes: 44 bits physical, 48 bits virtual
proc_cpuinfo.common.bogomips: 5187.80
proc_cpuinfo.common.cache_alignment: 64
proc_cpuinfo.common.cache_size: 22528 KB
proc_cpuinfo.common.clflush_size: 64
proc_cpuinfo.common.cpu_cores: 4
proc_cpuinfo.common.cpu_family: 6
proc_cpuinfo.common.cpu_mhz: 2593.904
proc_cpuinfo.common.cpuid_level: 21
proc_cpuinfo.common.flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single ssbd ibrs ibpb stibp fsgsbase bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx avx512f avx512dq rdseed adx smap clflushopt avx512cd avx512bw avx512vl xsaveopt xsavec spec_ctrl intel_stibp flush_l1d
proc_cpuinfo.common.fpu: yes
proc_cpuinfo.common.fpu_exception: yes
proc_cpuinfo.common.microcode: 0xffffffff
proc_cpuinfo.common.model: 85
proc_cpuinfo.common.model_name: Intel(R) Xeon(R) Gold 6142 CPU @ 2.60GHz
proc_cpuinfo.common.physical_id: 0
proc_cpuinfo.common.power_management: Unknown
proc_cpuinfo.common.siblings: 4
proc_cpuinfo.common.stepping: 4
proc_cpuinfo.common.vendor_id: GenuineIntel
proc_cpuinfo.common.wp: yes
proc_stat.btime: 1601759040
system.certificate_version: 3.2
system.default_locale: en_US.UTF-8
uname.machine: x86_64
uname.nodename: server-1
uname.release: 3.10.0-1127.19.1.el7.x86_64
uname.sysname: Linux
uname.version: #1 SMP Tue Aug 25 17:23:54 UTC 2020
virt.host_type: hyperv
virt.is_guest: True
virt.uuid: f03b8a46-bf3c-f34c-8260-7f25e8901385