Dear Shri Kaustubh Karandikar Ji,
As explained in my earlier post, I hold a view that subject services are not taxable under current GST, if subject services so provided by XYZ, are held as 'intermediary' services as defined u/s 2 (13) of IGST Act, 2017). Hence, XYZ is not liable to pay any gst there-against.
This is because, in my view, such services are neither inter-state supply u/s 7 nor intra-state supply u/s 8 of the IGST Act, 2017 when service-receiver (i.e. PQR) is located outside India. And any interpretation to make it as inter-state supply u/s 7 will in-turn make such provision unconstitutional to that extent.
You may refer to my article on TMI - published on 29.01.2019 - having subject-line as: A view: Why ‘Intermediary Service provided to recipient located outside India’ cannot fall under ‘Inter-State Supply’ and Why IGST is not leviable there against? And alternatively, why such provision treating it as ‘Inter-State Supply’ will be unconstitutional?
Real question (i.e. ifsubject services, provided by XYZ, are held as 'intermediary' services as defined u/s 2 (13) of IGST Act, 2017 and hence, if same is held as taxable under GST laws) is, to my mind, which tax XYZ should pay (whether CGST & SGST or IGST) thereagainst?
Ultimately, all these issues are very complex in nature which are open for different interpretations to my mind. And various question/s of law involved here, will be eventually settled - one way or other - by Supreme Court of India.
These are ex facie views of mine and the same should not be construed as professional advice / suggestion.