val·i·da·tion /ˌvalɪˈdeɪʃ(ə)n/ n.
The action of checking or proving the validity or accuracy of something. "The validation of test results across multiple datasets."
Whenever you're introducing a change to iProc, you should make sure that your current development branch still produces identical results. Any differences should be investigated, fixed, and discussed.
Kilmer is a software project that will (hopefully) assist you with iProc validation. The idea is simple. Run the same data set through two branches of iProc and compare the results. If the results are identical, you're good to go. If not...
Read the official documentation for more.