Hi @Astrotronic ,
The main problem is the two links point to the word Product is used as you say
if you find any older tutorials it’s important to know that the terminology ‘Product’ changed to ‘Entitlement’. class<abstract><castable>(product){} vs class<abstract><castable>(entitlement){}
This is currently causing major problems for Island publishing when developers try and add In Island Transactions
Publishing is covered in