API

https://developer-eu.elavon.com/docs/opayo-forms/api-reference/basket

Example of the Woocomerce is what is and the Shopify needs to be the same:

3:[Z110020EDI0305]milk_shake Direct Colour Cipria / Powder - 100ml:1:14.16:2.83:16.99:16.99:[Z110020EDI0705]milk_shake Direct Colour Copper - 100ml:1:14.16:2.83:16.99:16.99:Shipping:1:0.00:0.00:0.00:0.00