To initiate a SEPA payment, you will need several key pieces of information. The most critical is the recipient's International Bank Account Number (IBAN), which ensures the funds are sent to the correct account within the SEPA zone. In some cases, you may also need the Bank Identifier Code (BIC), although it's not always required for SEPA payments. Additional details include the amount to be transferred, the purpose of the payment, and sometimes a reference or invoice number. Depending on the bank or payment service provider, further information, such as the recipient's name and address, might also be requested.