Update Invoice Request
data class UpdateInvoiceRequest(val collectionMethod: InvoiceCollectionMethod? = null, val netTerms: Int? = null, val lineItems: List<LineItem>? = null, val dueDate: String? = null, val autoAdvance: Boolean? = null, val number: String? = null, val description: String? = null, val memo: String? = null, val metadata: Map<String, String>? = null)
Request body for updating an existing invoice.
All fields are optional; only non-null values are applied to the invoice.