The T4A numbers for CPP don’t correspond to turbo tax numbers. Where is the correct form?

You need the T4A(P) slip, not the T4A slip.

To get to the T4A(P) in TurboTax Online, use the “Find” tool (magnifying glass) to search for “T4A”. Select “T4A(P)-Canada pension plan benefits” from the list and then click the “Go” button.