We might end up with VRF Unusable error on the interface while configuring interfaces.
VRF unusable occurs when applied VRF on the interface does not exist or has typo.
e.g.
Upon troubleshooting, i figured out that it was because of a Silly mistake (TYPO)
NX-03(config)# sho run | in vrf
limit-resource vrf minimum 2 maximum 4096
vrf context PKA
vrf context management
vrf member KPA
vrf member management