Benefit of Schedule Case Reservation in Haryana

Dear Sir/Madam, My son completed B.Tech. in CSE and he would like to apply for group C and D vacancy in Haryana-CET. He is domicile of Chandigarh and based on that the schedule caste (SC) was issued from SDM Chandigarh. The same caste has recognized in both the state of Chandigarh and Haryana. Can he entitled to get the SC- reservation benefit in Haryana, for the position applying ?. His mother is working as a principal in Haryana and also have "Haryana pahchan Patra" in HPP his name has also been included and his caste also mentioned SC on the pahchan patra portal. His mother is domicile of Haryana and have valid SC certificate issued from Haryana with same recognized caste . Although Chandigarh is capital of both punjab and haryana but we did not know about the reservation benefit of chandigarh domicile applicant in both the state. I am requesting if you kindly clarify the reservation benefit if he will be apply for the above vacancy in haryana. We are very grateful for the same.