I want to change my base location. What precautions should i take?

Also, i think you should have completed atleast 2 years in TCS for base location change(as per RMG). If below 2 years, you can work in any of your project odc, but temporarily. There are chances anytime you will have to get back to your base location.

Only on medical grounds after TCS thorough check, your relocation of ur base location will happen. In most cases, tcs won't allow you to change the location

1: u should be allocated to a project 2: your project should allow you to relocate to your desired location
3: talk to your manager, they'll guide future.