I need to create and set up my Shipping groups within my Product Matrix extension.

Solution

Firstly you will need to log into your Admin panel of Magento. Then you will need to create the shipping groups for the products to be assigned to. This is done by navigating to Catalog>Attributes>Manage Attributes.

You will then need to click on the option to view the attribute called Package_id. From here you can see the attribute configuration.

Here you need to add the shipping group values as you need for your products. An example would be SMALL, MEDIUM, LARGE. These shipping groups must also be configured with the same name in your shipping rules within your csv file. Any mismatch here will result in no shipping rates being found.

Not all products need to be assigned to a shipping group. You can set up rules that apply to either all products, or all products that are not assigned a shipping group.

Please ensure you save your changes to the attribute.  You can now see these shipping groups under the Shipping tab in the product listings themselves, i.e. navigate to  Catalog>Manage Products

and select a product and the Shipping tab.

You can assign the shipping group as appropriate for that product.

Save this product.

Assuming you have uploaded a configuration CSV file which sets the appropriate rules for this shipping group (see example CSV) you will see shipping rates when the product is placed in the cart.