How do I make selected form fields mandatory?

Currently, it is only possible to define fields as mandatory in MyCashflow forms by using JavaScript.

In some cases, you may want to request from the customer information that isn't mandatory in MyCashflow forms by default. This could be, for example, a business ID if you sell products to companies.

By using JavaScript, you can specify that a particular form field must not be blank when submitting the form, and check that the format of the information provided in the form is correct: for instance, in case of a business ID, you can check that the indicated content has only numbers and is of the correct length.