1. In mUmbai taking of Probate of mandatory.
2. here taking of Probate is compulsory without Probate the Will has no value.
3. However taking of PRObate is not compulsory to sell a proeprty if all the legal heirs joins the sale deed.
4.For name transfer also taking of PRobate is not necessary nor name transfer is mandatory to sell the proeprty.
All the best.