Product Reference Data in Consumer Data payloads

Question

What is the best way to capture the configuration of the product feature, from a product no longer publicly offered, in a customers account?

For example our everyday savings account offers up to 4 debit cards ( additional_cards = 4 ) to be linked to the account however the consumer has only opted to setup 2. How do we represent this?

Answer

You would continue to represent additional_cards = 4 as this describes the features of the product in question. In addition to this it is advised to include in the additionalInfo field the specific configuration for the customer. In this example you would include they have 2 debit cards linked and are able to apply for 2 more.