Thank you Ranganathan sir, Thank you Shilpi Jain madam, for valued reply.
Shilpi Jain Madam, if I refer the applicability of rule 36(4) on such supply by supplier. 36(4) talk about the "sub-section (1) of section 37" and 37(1), read as " Every registered person, other than an Input Service Distributor, a non-resident taxable person and a person paying tax under the provisions of section 10 or section 51 or section 52 "
That means service supplied by regd supplier under RCM is covered under 37(1) and supplier has to file the supply in table 4B of GSTR-1 accordingly 36(4) will be applicable to recipient for such supply and subject to matching of data like invoice number, date, taxable value and tax also.
in that case if supplier is not filing the tax value while filing the data in GSTR-1 Table 4B, whether it will not impact the ITC eligibility of recipient please.