This update adds optional fields to Peppol invoices, resolving a previous issue where users couldn't send fully compliant invoices. Now, through the studio interface, users can incorporate necessary optional fields and attributes, ensuring adherence to Peppol standards and facilitating smoother invoice processing.

Currently, several specific UBL fields are lacking from our Peppol integration, resulting in users not being able to send compliant invoices Using studio, they can now add the optional fields that are allowed by us and their optional attributes
TODO: Add Test case
task-4963157