Are input parameters always mandatory in OutSystems?

In OutSystems, input parameters are not always mandatory; it is possible to define them as optional. When configuring an action or a screen, developers have the flexibility to either require certain parameters for execution or to allow them to be optional. This means that a particular input can be specified to be provided during a call, but if it is not, the action or screen can still execute without it, depending on how it has been designed.

Fundamentally, the design and implementation choices that developers make determine the necessity of input parameters, allowing for greater flexibility in application logic and enabling scenarios where default values or alternative pathways can be utilized in the absence of specific parameter values. This is why the notion of input parameters being mandatory is false; they can be defined based on the specific application requirements and the logic encapsulated within the module.