1. An institution which does not calculate the own funds requirements for CVA risk for its counterparties in accordance with Article 383 shall calculate a portfolio own funds requirements for CVA risk for each counterparty in accordance with the following formula, taking into account CVA hedges that are eligible in accordance with Article 386:
h = the one-year risk horizon (in units of a year); h = 1;
wi = the weight applicable to counterparty "i".
Counterparty "i" shall be mapped to one of the six weights wi based on an external credit assessment by a nominated ECAI, as set out in Table 1. For a counterparty for which a credit assessment by a nominated ECAI is not available: