This is a file that can support functions to change the way data works or is displayed in a system. These functions can be handled here for any new formula IPaaS does not have.
below can be seen a conversion function to change a time format for a system
Once created these functions can be utilized by the integrator inside of the integration itself. However, note that this function can also be called by the user once supported here at their leisure through the mappings. By choosing to run the data through the function as a formula when adding mapped fields seen below.