Falling New Zealand dollar and interest rates pushed Westpac's New Zealand branch total liabilities beyond the $15 billion limit during the six months ended March 2009. As at March 31, the bank's total liabilities in NZ was at NZ$16.2 billion.The NZ$15 billion limit on total liabilities is one of the several conditions of registration imposed on the NZ branch.Westpac said it has notified the Reserve Bank of New Zealand on becoming aware of this non-compliance and is working, in consultation with it, on steps to remedy the non-compliance.The falling NZ dollar and interest rate increased the liability under interest rate and cross currency swaps as positions were revalued.