The Western Cape runs its own bid document set, the WCBD forms, in place of the national SBD ones. WCBD 4 alone does the work of SBD 4, SBD 8 and SBD 9. That set is what we generate, and it is what the Western Cape Supplier Evidence Bank accepts.
If you bid to national departments, or in Gauteng, KwaZulu-Natal or anywhere else in South Africa, you are filling in SBD forms and this will not help you yet. We would rather tell you that now than after you have created an account. If that is you, browse South African tenders and tell us where you bid, so we know which province to build next.
Registering on the National Treasury's Central Supplier Database comes first either way. WCSEB uses the CSD as its master database, so if you are not on it, start there.