Corporate Bank Guarantee - Goods and Services Tax - GST

A Corporate Bank Guarantee has been issued by the Holding Company located in London UK on behalf of its subsidiary in India for availing Working Capital facilities in 2013. My query is, whether GST is applicable in case of BG is issued by an Overseas Entity for its subsidiary in India, whether ITC is available to the beneficiary, ie, the subsidiary, and how invoice will be raised to avail ITC. Also, Whether GST applicable under Rule 28(2) wef 26-10-2023 @ 18% of 1% of BG value for 2023-2024 and every FY thereafter. How will the value be determined prior to 26-10-2023 under rule 28 .