You are not sure which SAP NetWeaver release is necessary to run NWBC 3.0.
NWBC 3.0 against an ABAP stack with PFCG as role repository requires at a minimum the following SAP NetWeaver releases:
SAP NetWeaver 7.00 SP21+
SAP NetWeaver 7.01 SP6+
SAP NetWeaver 7.02 SP03+
For SAP NetWeaver 7.00 and SAP NetWeaver 7.01, NWBC is only released for limited use cases. For more information, see SAP Note 1368177 . For SAP NetWeaver 7.02, NWBC is generally released. This applies to both variants of NWBC 3.0 (NWBC for Desktop and NWBC for HTML).