Instrument token won't be changed for a scrip unless its exchange token which is set by exchange is changed. So for most of the scrips it shouldn't change but it's always good to update your instrument token from our instruments dump just to be sure that your code won't break someday.
@Pandiyaraj, The thing is nobody can ever predict when a new scrip will be added when a scrip is moved from EQ segment to T2T segment. This when instrument dump is updated. If it fits your purpose by only updating instrument file once a week then you can do it.
The thing is nobody can ever predict when a new scrip will be added when a scrip is moved from EQ segment to T2T segment. This when instrument dump is updated.
If it fits your purpose by only updating instrument file once a week then you can do it.