diff --git a/package.json b/package.json
index fa6b986..d11a81a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "processout.js",
-  "version": "1.8.1",
+  "version": "1.8.2",
   "description": "ProcessOut.js is a JavaScript library for ProcessOut's payment processing API.",
   "scripts": {
     "build:processout": "tsc -p src/processout && uglifyjs --compress --keep-fnames --ie8 dist/processout.js -o dist/processout.js",
diff --git a/src/dynamic-checkout/payment-methods/apm.ts b/src/dynamic-checkout/payment-methods/apm.ts
index ced0cdf..c8fc083 100644
--- a/src/dynamic-checkout/payment-methods/apm.ts
+++ b/src/dynamic-checkout/payment-methods/apm.ts
@@ -177,6 +177,7 @@ module ProcessOut {
               payment_method_name: apm.gateway_name,
               invoice_id: this.paymentConfig.invoiceId,
               return_url: this.paymentConfig.invoiceDetails.return_url || null,
+              tab_closed: error.metadata?.reason === "tab_closed",
             })
           } else {
             this.resetContainerHtml().appendChild(
diff --git a/src/dynamic-checkout/utils/events.ts b/src/dynamic-checkout/utils/events.ts
index f8098af..6785259 100644
--- a/src/dynamic-checkout/utils/events.ts
+++ b/src/dynamic-checkout/utils/events.ts
@@ -238,6 +238,7 @@ module ProcessOut {
       payment_method_name: string
       invoice_id: string
       return_url: string | null
+      tab_closed?: boolean
     }) {
       const event = DynamicCheckoutEventsUtils.createEvent(
         DYNAMIC_CHECKOUT_EVENTS.PAYMENT_CANCELLED,
diff --git a/src/processout/actionhandler.ts b/src/processout/actionhandler.ts
index 70b2b22..0ae2b3f 100644
--- a/src/processout/actionhandler.ts
+++ b/src/processout/actionhandler.ts
@@ -347,7 +347,7 @@ module ProcessOut {
                   // The payment window was closed
                   clearInterval(timer)
                   timer = null
-                  error(new Exception("customer.canceled"))
+                  error(new Exception("customer.canceled", undefined, { reason: "tab_closed" }))
                   
                   // Temporary just to investigate the issue
                   telemetryClient.reportWarning({
diff --git a/src/processout/exception.ts b/src/processout/exception.ts
index 0f634ea..b693c45 100644
--- a/src/processout/exception.ts
+++ b/src/processout/exception.ts
@@ -5,15 +5,20 @@
  */
 module ProcessOut {
 
+    export interface ExceptionMetadata {
+        [key: string]: string | boolean | number;
+    }
+
     /**
      * ProcessOut Exception class
      */
     export class Exception extends Error {
         public code:    string;
         public message: string;
+        public metadata: ExceptionMetadata;
         public stack:   string;
 
-        constructor(code: string, message?: string) {
+        constructor(code: string, message?: string, metadata?: ExceptionMetadata) {
             if (! message)
                 message = Translator.translateError(code);
 
@@ -21,6 +26,7 @@ module ProcessOut {
 
             this.code    = code;
             this.message = message;
+            this.metadata = metadata;
 
             this.name  = "ProcessOutException";
             this.stack = (<any> new Error()).stack;