Data sent via the dataLayer

Each data set for a single product contains:
- id - product id
- variant - combination attributes
- name - product name
- price - product price
- brand - product manufacturer
- category - name of the product's default category

Data is sent according to the documentation:
https://developers.google.com/tag-manager/enhanced-ecommerce

Displaying products
https://developers.google.com/tag-manager/enhanced-ecommerce#product-impressions

{

    'ecommerce': {

        'currencyCode': 'EUR', // currency

        'impressions': [

            {

                ...  // standard product data set

                'list': 'Search Results', // product list name

                'position': 1 // position on the product list

            },

            ... // next products on the list

        ]

    }

}

Clicking on products
https://developers.google.com/tag-manager/enhanced-ecommerce#product-clicks

{

    'event': 'productClick',

    'ecommerce': {

        'click': {

            'actionField': {

                'list': 'Product Page' // product list name

            },

            'products': [

                {

                    ...  // standard product data set

                    'position': 1 // position on the product list

                }

            ]

        }

    }

}

Viewing product details
https://developers.google.com/tag-manager/enhanced-ecommerce#details

{

    'ecommerce': {

        'detail': {

            'actionField': {

                'list': 'Product Page' // product list name

            },

            'products': [

                {

                    ...  // standard product data set

                }

            ]

        }

    }

}

Adding products to cart
https://developers.google.com/tag-manager/enhanced-ecommerce#add

{

    'event': 'addToCart',

    'ecommerce': {

        'currencyCode': 'EUR', // currency

        'add': {    

            'products': [

                {                  

                    ...  // standard product data set

                    'quantity': 1 // product quantity

                }

            ]

        }

    }

}

Removing products from cart
https://developers.google.com/tag-manager/enhanced-ecommerce#add

{

    'event': 'removeFromCart',

    'ecommerce': {

        'add': {    

            'products': [

                {                  

                    ...  // standard product data set

                    'quantity': 1 // product quantity

                }

            ]

        }

    }

}

Checkout step
https://developers.google.com/tag-manager/enhanced-ecommerce#checkout_option

{

    'event': 'checkout',

    'ecommerce': {

        'checkout': {

            'actionField': {

                'step': 1, // checkout step number

            }

        }

    }

}

Choosing an option (e.g. shipping method) during checkout
https://developers.google.com/tag-manager/enhanced-ecommerce#checkout_option

{

    'event': 'checkoutOption',

    'ecommerce': {

        'checkoutOption': {

            'actionField': {

                'step': 1, // checkout step number

                'option': 'PayPal' // chosen option

            }

        }

    }

}

Placing an order
https://developers.google.com/tag-manager/enhanced-ecommerce#purchases

{

    'event': 'purchase',

    'ecommerce': {

        'purchase': {

            'actionField': {

                'id': 'T12345', // order id

                'revenue': '35.43', // order value

                'tax':'4.90', // tax value

                'shipping': '5.99', // shipping cost

            },

            'products': [

                {

                    ...  // standard product data set

                    'quantity': 1 // product quantity

                }

            ]

        }

    }

}