Three advantages of using Flow Builder vs writing Apex code to manage the main flow of Order data are:

The admin can attach a debugger to live customersessions. This allows the admin to monitor and troubleshoot the flow execution in real time, without affecting the customer experience or data integrity.

The admin can easily debug specific business cases visually. This allows the admin to test the flow with different input values and see how the flow behaves in a graphical interface, without writing any code.

Because it is visual it is also self-documenting as changes are made. This allows the admin to easily understand and maintain the flow logic, as wellas track the changes and versions of the flow.

Verified References: https://help.salesforce.com/s/articleView?id=sf.flow_builder_debug.htm & type=5 https://help.salesforce.com/s/articleView?id=sf.flow_builder.htm & type=5

The best way for a user to view the information exchanged between the payment platform and the external payment gateways is to navigate to Payment Gateway Logs related list on the corresponding Order Payment Summary. A Payment Gateway Log is a record that captures the request and response messages between the payment platform and the external payment gateways, such as Stripe, PayPal, etc. A PaymentGateway Log has a lookup relationship to the Order Payment Summary object, which represents a payment made for an order or part of an order. A user can use the Payment Gateway Logs related list on the Order Payment Summary page to view the details of thepayment transactions, such as the request and response payloads, status codes, timestamps, etc. Verified References: https://help.salesforce.com/s/articleView?id=sf.order_management_payment_gateway_log.htm & type=5https://help.salesforce.com/s/articleView?id=sf.order_management_order_payment_summary.htm & type=5