1. A computer-implemented mapping method in a customizable pre-packaged computing solution, the method comprising: establishing a connection from a business process to code mapping module executing in memory by a processor of a computer to a source customizable pre-packaged computing solution; extracting both a business process hierarchy (BPH) and customized program code from the source customizable pre-packaged computing solution and storing the BPH and the extracted customized program code in storage coupled to the computer; selecting a business process in the BPH; mapping the selected business process to corresponding portions of the customized program code; and, generating and displaying in the computer a dependency graph of the mapped portions of the customized program code in the storage, the dependency graph indicating dependency relationships of the mapped portions of the customized program code for the selected business process of the BPH of the source customizable pre-packaged computing solution.