Mvspsp 2.3.5 Access

Starting with MVS, I know that in computing terms, MVS stands for Multiple Virtual Storage, a mainframe operating system. But maybe in this context, it's part of a company's product or a specific software system. Then there's SPSP. The user might have meant MVS/SPSS? Wait, SPSS is a software package for statistical analysis. But combining MVS with SPSS might not make sense. Alternatively, SPSP could stand for something else in a specific industry, like aerospace or telecommunications.