Rcm liablity where to show

In GSTR-3B:

3.1 (d) Inward supplies (liable to reverse charge)

Fill taxable value and tax amount

4(A)(3) Inward supplies liable to reverse charge (other than 1 & 2 above)

Mention the amount of tax

In GSTR-1: No Treatment

Since it is an inward supply and GSTR-1 deals with details of outward supplies of goods or services

OK 

BUT THEN WHAT IS SELF INVOICE UNDER GST

SOMEONE SAYS WE HAVE TO PREPARE SELF INVOICE ON OUR NAME WHERE SERVICE RECEIVER AND PROVIDER GST NO. WILL BE SAME

HOW TO MAKE THIS TREATMENT THEN???

AND WHAT ABOUT ITC OF RCM??