Application program interface for a computer program

A computer program, and a method and apparatus for creating the computer program. The computer program is stored on a computer readable medium and is executable by a computer system. The computer system can comprise a front-end for interfacing with a user, and a back-end for performing batch functions. The computer program comprises instructions for performing a function, which requires at least one parameter for its operation. The computer program further comprises instructions for reading the parameter from a parameter cache in the computer system. The parameter cache is capable of storing the parameter as an object therein. The computer program also comprises instructions for validating the parameter and aborting the function if the parameter is not valid, and instructions for loading the parameter from the parameter cache and performing the function in accordance with the parameter if the parameter is valid.