I am building a DTL to transform from a JSON/XML to a custom message. The DTL works fine, but I wants to move some part of the data transformation to another DTL and calls it using the <subtransform> action from the main DTL.
to define
Application Programming Interface (API) is a set of subroutine definitions, protocols, and tools for building application software. In general terms, it is a set of clearly defined methods of communication between various software components.