public function filterActingOpts($opts) {
        $regionmetamap = [
            'us' => [
                'jsurl' => 'https://static-na.payments-amazon.com',
                'integrationCentralUrl' => 'https://sellercentral.amazon.com/gp/pyop/seller/integrationcentral/',
                'ledgerCurrency' => 'USD',
                'checkoutLanguage' => 'en_US',
            ],
            'eu' => [
                'jsurl' => 'https://static-eu.payments-amazon.com',
                'integrationCentralUrl' => 'https://sellercentral-europe.amazon.com/gp/pyop/seller/integrationcentral/',
                'ledgerCurrency' => 'EUR',
                'checkoutLanguage' => 'en_GB',
            ],
            'uk' => [
                'jsurl' => 'https://static-eu.payments-amazon.com',
                'integrationCentralUrl' => 'https://sellercentral-europe.amazon.com/gp/pyop/seller/integrationcentral/',
                'ledgerCurrency' => 'GBP',
                'checkoutLanguage' => 'en_GB',
            ],
            'jp' => [
                'jsurl' => 'https://static-fe.payments-amazon.com',
                'integrationCentralUrl' => 'https://sellercentral-japan.amazon.com/gp/pyop/seller/integrationcentral/',
                'ledgerCurrency' => 'JPY',
                'checkoutLanguage' => 'ja_JP',
            ],
        ];

        $opts['region'] = isset($opts['region']) ? strtolower($opts['region']) : 'jp';
        $rmap = $regionmetamap[$opts['region']];
        $opts['amzjsurl'] = $rmap['jsurl'];
        $opts['integrationCentralUrl'] = $rmap['integrationCentralUrl'];
        $opts['ledgerCurrency'] = $rmap['ledgerCurrency'];
        $opts['checkoutLanguage'] = $rmap['checkoutLanguage'];

        $host = '';
        $url = esc_url_raw(wp_unslash(get_home_url()));
        if (!empty($url)) {
            $scheme = wp_parse_url($url, PHP_URL_SCHEME);
            $host = !$scheme ? 'https://' . $url : $url;
        }

        foreach (self::SDK_REQUIRED_FIELDS as $rfieldkey) {
            $opts[$rfieldkey] = isset($opts[$rfieldkey]) ? trim($opts[$rfieldkey]) : '';
        }

        $opts['ipn_endpoint'] = !empty($opts['ipn_endpoint']) ? trim($opts['ipn_endpoint']) : $host;
        $opts['ipn_registered'] = isset($opts['ipn_registered']) ? (bool)(int)$opts['ipn_registered'] : false;
        $opts['ipn_verified'] = isset($opts['ipn_verified']) ? (bool)(int)$opts['ipn_verified'] : false;
        $opts['transaction_processing_type'] = isset($opts['transaction_processing_type']) ? $opts['transaction_processing_type'] : 'sync';
        $opts['sync_with_order_status_changes'] = isset($opts['sync_with_order_status_changes']) ? $opts['sync_with_order_status_changes'] : 'off';
        $opts['use_social_login'] = isset($opts['use_social_login']) ? $opts['use_social_login'] : 'on';
        $opts['use_quickpay'] = isset($opts['use_quickpay']) ? $opts['use_quickpay'] : 'on';
        $opts['quickpay_btn_position'] = isset($opts['quickpay_btn_position']) ? $opts['quickpay_btn_position'] : 'below';
        $opts['quickpay_notes_field'] = isset($opts['quickpay_notes_field']) ? $opts['quickpay_notes_field'] : 'on';
        $opts['quickpay_custom_order_fields'] = isset($opts['quickpay_custom_order_fields']) ? $opts['quickpay_custom_order_fields'] : 'on';
        $opts['quickpay_custom_delivery_fields'] = isset($opts['quickpay_custom_delivery_fields']) ? $opts['quickpay_custom_delivery_fields'] : 'on';
        $opts['quickpay_default_customer_address_details'] = isset($opts['quickpay_default_customer_address_details']) ? $opts['quickpay_default_customer_address_details'] : 'off';
        $opts['address_priority'] = isset($opts['address_priority']) ? $opts['address_priority'] : 'amazon';
        $opts['buttonColor'] = isset($opts['buttonColor']) ? $opts['buttonColor'] : 'Gold';

        $opts['amazonpay_config'] = [
            'public_key_id' => $opts['public_key_id'], // RSA Public Key ID (this is not the Merchant or Seller ID)
            'private_key' => $opts['private_key'], // Path to RSA Private Key (or a string representation)
            'merchant_id' => $opts['merchant_id'], // Merchant/SellerID
            'client_id' => $opts['client_id'], // Login With Amazon Client ID
            'region' => $opts['region'],  // us, eu, uk, jp
            'currency_code' => usces_crcode('return'), // USD, EUR, GBP, JPY
            'sandbox' => $opts['sandbox'],
        ];

        return $opts;
    }