← GUIDES·How-to·4 min read

Credit notes under e-invoicing, in plain English

How to handle returns, discounts, and post-issuance adjustments without running afoul of NRS validation rules.

Under Nigeria's e-invoicing framework, an invoice cannot be simply deleted or modified once it has been validated and issued an IRN.

Any price adjustments, returned goods, or billing disputes must be processed via formal electronic Credit Notes or Debit Notes linked directly to the original invoice IRN.

The NRS MBS automatically validates that the credit note references an existing approved invoice and that the adjustment amount does not exceed the remaining balance.

NorthGate simplifies credit note issuance with one-click reference lookup and automatic balance recalculations.

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