In india, Since most of the mechanic are illiterate but has huge experience in the job, They dont know the technical name for a lot of problems in the motorcycles.
The 'Tik-Tik' noise is timing noise(Tappet noise) produced by the timing chain. Timing chains usually last about 30k - 50k kms and sometimes they last forever. If you experience timing chain problem I would suggest you to claim warranty from Royal Enfield for replacing tappet\timing chain and it's associated parts. The timing chain usually wont wear so quick so the timing adjuster may be faulted.
The assembling of the motorcycle engine is usually a automated process so I would doubt on a failure of the spare in first place. replace your timing adjuster since it doens't require opening the complete engine. If you still here noises, Then go for replacing the timing chain. If both of these options doesn't resolve the issue, then I would suggest you to check deep into hydraulic tappet parts.