I gave only my account number to CWC Affiliates, and Jason handled the rest.
I don’t know how much information is “required” to make a transfer. To be on the safe side, I have been providing other affiliate programs with (1) my EcoCard account number, (2) my EcoCard ID (i.e. “engineer”), (3) my full name, and (4) the email address I used with I signed up with EcoCard.