regarding gstr-1A

basically gstr-1A connected to the buyer's gstr2..it is an auto drafted form.my question is, if the seller reject some invoices from gstr-1A then where actually affect to his buyer.as per gst acts the buyer can't take ITC if seller reject..but how to identify the seller rejected our invoices where?? gstr-2 will be affect?? or the buyer still can take ITC??