My height is 172 cm what should be my ideal weight?
Some dietitians suggest that Indian have a different genetic makeup so my ideal weight should be further low than what BMI suggests.
i am trying to reduce and would like to set correct goals for weight loss.
Yes Indian charts are somewhat different.
Some dietitians will go for 10 Kg less than what BMI suggests. That should put you in the right ball park for Indian height/weight match.
I would consult a specialist in person who can provide a more detailed review for you.