(2) It is mandatory for the applicants to mention either their ''Telephone number'' or valid. INSTRUCTIONS FOR FILLING FORM 49A a) Form to be filled legibly in BLOCK LETTERS and preferably in BLACK INK Form should be filled In Enplish only.Form 49A: This form is for Indian citizens, including both residents and nonresidents. The applicant is requested to save and print this acknowledgement. Visit the TIN-NSDL Website and click on "Online PAN Application"; From the drop-down menu, select the appropriate option i.