View difference between Paste ID: mir8bULR and qZfRNvKF

 window.dataLayer = window.dataLayer || [];
 window.dataLayer.push({
   event: 'add_to_cart',  			// name of the event. In this case, it always must be add_to_cart
-  userId: '123abc' // this should be replaced by actual user ID and cannot be PII e.g. email address or IP address
+
     items: [{							// an array with a product (or multiple products) that was added to a cart
       item_name: 'Product 1', 			// insert an actual product name
       item_id: 'product1',				// insert an actual product ID
       price: '11.99',					// insert an actual product price. Number or a string. Don't include currency code
       item_brand: 'brand A',			// insert an actual product price
       item_category: 'Apparel',			// insert an actual product top-level category
       index: 1,							// if a product is added to cart directly from product list, add the position in the list here
       quantity: '1'						// product quantity of how many products were added to a cart
 item_app: 'Shopcast'				//if a product that appears is from the recommended products then Shopcast should appear here otherwise it should be empty
 
 item_model:'user_to_item'		//if the product is from the recommended products then the respective model should come here i.e. user_to_item, item_to_item or top_rated
 
     }]
   }
 });