Fix exchange rate issue with automated invoicing in qbo

composer.json

@@ -155,7 +155,8 @@
 		"wpackagist-theme/twentyten": "*",
 		"wpackagist-theme/twentytwentytwo": "*",
 		"wpackagist-theme/twentytwentythree": "*",
-		"wpackagist-theme/twentytwentyfour": "*"
+		"wpackagist-theme/twentytwentyfour": "*",
+		"quickbooks/v3-php-sdk": "*"
 	},
 	"scripts": {
 		"format": "phpcbf -p",

public_html/wp-content/plugins/wordcamp-qbo/wordcamp-qbo.php

@@ -493,9 +493,31 @@ protected static function build_qbo_create_invoice_request( int $invoice_id ) {
 		 * for the first time, so we don't need any code to automatically activate them.
 		 */
 		if ( 'USD' != $currency_code ) {
+			$response = wp_remote_get(
+				sprintf(
+					'%s/v3/company/%d/exchangerate?sourcecurrencycode=%s',
+					self::$api_base_url,
+					rawurlencode( $realm_id ),
+					$currency_code,
+				),
+				array(
+					'timeout' => self::REMOTE_REQUEST_TIMEOUT,
+					'headers' => array(
+						'Authorization' => $oauth_header,
+						'Accept'        => 'application/json',
+						'Content-Type'  => 'application/json',
+					),
+				)
+			);
+
+			$body          = json_decode( wp_remote_retrieve_body( $response ), true );
+			$exchange_rate = $body['ExchangeRate']['Rate'];
+
 			$payload['CurrencyRef'] = array(
 				'value' => $currency_code,
 			);
+
+			$payload['ExchangeRate'] = $exchange_rate;
 		}
 
 		$request_url = sprintf(