ACP2E-4033: Issue mapping translated message to error code when placing order via GraphQL

Author: thiaramus

app/code/Magento/GraphQl/Helper/Error/AggregateExceptionMessageFormatter.php

@@ -60,6 +60,7 @@ public function getFormatted(
         }
 
         $message = $e->getCode() ? __($e->getMessage()) : $defaultMessage;
-        return new GraphQlInputException($message, $e, $e->getCode());
+
+        return new GraphQlInputException(__("$messagePrefix: %message", ['message' => $message]), $e, $e->getCode());
     }
 }

app/code/Magento/QuoteGraphQl/Model/ErrorMapper.php

@@ -43,6 +43,7 @@ class ErrorMapper
         'Please check the billing address information' => self::ERROR_UNABLE_TO_PLACE_ORDER_ID,
         'Enter a valid payment method and try again' => self::ERROR_UNABLE_TO_PLACE_ORDER_ID,
         'Some of the products are out of stock' => self::ERROR_UNABLE_TO_PLACE_ORDER_ID,
+        'Unable to place order' => self::ERROR_UNABLE_TO_PLACE_ORDER_ID,
     ];
 
     /**

app/code/Magento/QuoteGraphQl/Model/Resolver/PlaceOrder.php

@@ -70,16 +70,15 @@ public function resolve(Field $field, $context, ResolveInfo $info, ?array $value
         } catch (LocalizedException $exception) {
             $exception = $this->errorMessageFormatter->getFormatted(
                 $exception,
-                __('Unable to place order: A server error stopped your order from being placed. ' .
-                    'Please try to place your order again'),
+                __('A server error stopped your order from being placed. Please try to place your order again'),
                 'Unable to place order',
                 $field,
                 $context,
                 $info
             );
             $exceptionCode = $exception->getCode();
             if (!$exceptionCode) {
-                $exceptionCode = $this->errorMapper->getErrorMessageId($exception->getMessage());
+                $exceptionCode = $this->errorMapper->getErrorMessageId($exception->getRawMessage());
             }
 
             throw new QuoteException(__($exception->getMessage()), $exception, $exceptionCode);