# Function: isInvoiceApproval()

> **isInvoiceApproval**(`approval`): `boolean`

Defined in: [packages/bitbadgesjs-sdk/src/core/invoices.ts:24](https://github.com/BitBadges/bitbadgesjs/blob/master/packages/bitbadgesjs-sdk/src/core/invoices.ts#L24)

## Parameters

### approval

[`iCollectionApproval`](https://docs.bitbadges.io/sdk/reference/interfaces/i-collection-approval)\<`bigint`\>

## Returns

`boolean`