Terraform Importing a Azure Network Security Group, protocol is "Tcp" not "TCP"

I am trying to import Azure NSG with terraform Import .
when i try to validate the configuration file it is giving me error :expected security_rule.0.protocol to be one of [* Tcp Udp Icmp Ah Esp], got TCP.
Need suggestions on how to resolve this issue

I can see the similar error : Ignoring the case for NSG Protocol’s in the state (#13153)
but i am getting same error