SPM 2.1 Web Services

Our client is looking for additional information on the web services required for SPM 2.1:

1. They would like an exact list of all services required; currently we have one OPM_DM_X, 32 RS_BCT_XA, 15 RS_BCT_XSA, and one RS_BXT_XA. There is also one called QUERY_VIEW_DATA but am not sure it is part of SPM. Does that inventory of services sound correct (would anyone share their list from a working system)

2. They would like documentation on the purpose and function of each service; I have to assume such a document exists.

Thank you in advance for your assistance.