Kindly run refer below.
esxcli storage vmfs unmap -l (label name)
or
esxcli storage vmfs unmap -u (UUID)
Refer the VMware Knowledge base.
https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2057513
or https://youtu.be/5pWI0K0iJA8
esxcli storage vmfs unmap -l MyDatastore
or
esxcli storage vmfs unmap -u 509a9f1f-4ffb6678-f1db-001ec9ab780e
esxcli storage vmfs unmap -l (label name)
or
esxcli storage vmfs unmap -u (UUID)
Refer the VMware Knowledge base.
https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2057513
or https://youtu.be/5pWI0K0iJA8
esxcli storage vmfs unmap -l MyDatastore
or
esxcli storage vmfs unmap -u 509a9f1f-4ffb6678-f1db-001ec9ab780e