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User guides / Supplier countries A supplier whose bank account is held in Nigeria sees the fields below. The country is chosen on the form, and changing it changes the fields, so a supplier is never asked for a detail their country does not use.

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Bank details

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IBAN

Nigeria does not use IBANs. Accounts are identified by the fields above.

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Tax and company registrations

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Where these rules come from

CBN NUBAN specification (weights 3,7,3 over bank code + serial). The rules on this page are confirmed against a primary source, so they are enforced strictly. Configuration version 2026.09.1. Your organization can override any of these rules for its own suppliers.

Supplier countries

Every country Coverbase validates, side by side.

Supplier information guide

How these details are collected, reviewed, and handed to your finance system.