Prepare your data (required fields)

NRS is strict about what an invoice must contain. The good news: Zinye checks everything before it sends, and if something’s missing it shows you one clear list — so you fix it once and you’re done. This page is that list, so you can set it up ahead of time.

Your company (the seller)

Open your Company record (search Company) and set, in the Nigeria Compliance section and the standard fields:

Field	Requirement
TIN	Your TIN — and it must match the one registered with NRS for your Business ID.
Email	A valid company email address.
Phone	Must start with + and your country code, e.g. +2348012345678.
Company Description	At least 5 characters.
Address	Street, city, state, and LGA (in the Nigeria Compliance address fields).

Caution

The TIN must match NRS’s records for your business. If it doesn’t, NRS rejects the invoice with “supplier TIN does not match the record on the Business ID.” Use the TIN shown on your NRS portal dashboard.

Your customers (B2B buyers)

For business customers (anyone with a TIN), open the Customer and set:

Field	Requirement
Tax ID / TIN	The buyer’s TIN (this is what makes it a B2B invoice).
Email	A valid email address.
Mobile	Must start with +, e.g. +2348087654321.

Note

A customer’s Mobile is filled in from their primary Contact, not typed directly on the customer. Create a Contact for the customer, add the mobile number, mark it as primary, and link it — the customer’s Mobile field then fills automatically.

B2B vs B2C is automatic

Leave Invoice Kind blank — Zinye detects B2B when the customer has a TIN, and B2C when they don’t. A customer with no TIN (e.g. a walk-in individual) is simply marked Not Required and never sent to NRS while B2B Only is on. That’s normal. (B2C / POS receipts go through ATRS instead.)

Your items

Every item on an invoice must tell NRS what it is. The rule is simple:

• Goods (something physical you sell) → give it an HS Code.
• Services (something you do) → give it a Service Code.
• Never put both on the same item. Pick one.

Open each Item you sell, go to the NRS Classification section, and set one of:

Field	Requirement
HS Code	For goods — the product’s harmonised code, in 0000.00 format (e.g. 8471.30): four digits, a dot, two digits. Not a plain 8-digit number.
Service Code	For services — use a Service Code instead of an HS Code.

You don’t need to memorise numbers. Click the field and start typing a description — type laptop for a product, or consulting for a service — and pick the matching code from the list. (This is why you synced the code lists during setup.)

Each line on an invoice needs either an HS Code or a Service Code — never both, never neither.

How Zinye helps

When you submit an invoice, if any of the above is missing or in the wrong format, Zinye stops you with a single message listing exactly what to fix — for example:

This invoice cannot be sent to NRS — please complete the following:

• Company Phone — must start with + and country code (e.g. +234…)
• Item TEST‑PRODUCT‑01: HS Code must be in 0000.00 format

Fix the items in the list, submit again, and it goes through.

Tip

If a particular invoice shouldn’t go to NRS at all, tick Skip NRS e-Invoice on it to opt out — no validation, no submission.

Next

• Send your first e-invoice