Why these documents are required
Anti-money-laundering rules and licensed payment partner requirements apply to every Nigerian merchant that processes card or bank payments and settles to a Nigerian bank account. KYC and KYB are how partners confirm who is behind the business, where settlement is going, and that the business activity matches what is being processed.
PayKato collects these documents once and shares them with the licensed partners required to process your transactions. You don't fill out separate forms with each processor.