Is RCM Applicable on this security service ?

my company registered in maharashtra for gstn have a bunglow used for business in Goa ....i have taken security services form registered individual person from goa itself.....previous to the notification we were not taking credit on such invoices raised by the security service provider ....as he used to charge C + S
.....BU Now ....he is not charging......so rcm applies to us ...



question is .....we are paying rcm.....but what type of tax should be charged.....IGST .....or SGST / CGST?