> ## Documentation Index
> Fetch the complete documentation index at: https://developer.jtl-software.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CancelSalesInvoiceCommandRequestInput

> Cancels a sales invoice. - Request



**Kind**: `input`

## Fields

**`salesInvoiceId`**: `ID!` (required)

The ID of the sales invoice to cancel.

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**`cancellationReasonId`**: `ID!` (required)

The reason for cancelling the invoice.

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**`cancellationComment`**: `String`

An optional comment explaining the cancellation.