What is the priority requirement for the 'payment' work package?

In the context of the 'payment' work package, the priority requirement can be understood by considering the primary functionality that the payment system must provide to users. Allowing payment by credit card is often a fundamental requirement for many payment processing systems, as it addresses a significant portion of customer preferences and common practices. Credit card payments are widely accepted and expected by customers, making it a foundational aspect of any payment work package.

While implementing online payment systems, allowing debit card transactions, and executing secure payment protocols are also important, they can be viewed as enhancements or additional features that build upon the core requirement of accepting credit card payments. Therefore, ensuring that users can make payments via credit card is the essential and most immediate need that forms the basis for further functionality in the payment system.