need urgent response - IBY_EXT_BANKACCT_PUB.

 Hello

I am using following api to create a supplier bank account and assign it to supplier site

now there is a requirement to assign an existing bank account to a different supplier site

iby_ext_bankacct_pub.create_ext_bank_acct
                                    (
         p_api_version            => 1.0,
         p_init_msg_list          => fnd_api.g_true,
         p_ext_bank_acct_rec      => p_in_acct_rec,
         p_association_level      => 'SS',
         p_supplier_site_id       => p_vendor_site_id,
         p_party_site_id          => p_party_site_id,
         p_org_id                 => g_r12_org_id,
         p_org_type               => 'OPERATING_UNIT',
         x_acct_id                => l_account_id,