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POST
/
invoices
/
{foreign_id}
/
cancel
Cancel an invoice
curl --request POST \
  --url https://app.lt.cryptoprocessing.com/api/v2/invoices/{foreign_id}/cancel/ \
  --header 'Content-Type: application/json' \
  --header 'X-Processing-Key: <api-key>' \
  --header 'X-Processing-Signature: <x-processing-signature>' \
  --data '{}'
[]

Documentation Index

Fetch the complete documentation index at: https://docs.lt.cryptoprocessing.com/llms.txt

Use this file to discover all available pages before exploring further.

Use this endpoint to cancel an invoice. You can only cancel invoices while they are still at the created, pending or processing stage. Invoices that have the confirmed or failed statuses cannot be cancelled.

Authorizations

​
X-Processing-Key
string
header
required

Your API key.

Headers

​
X-Processing-Signature
string
required

Hex-encoded HMAC-SHA512 signature of the request body, generated using your secret key.

Path Parameters

​
foreign_id
string
required

The unique identifier of the invoice you need to cancel.

Example:

"test_foreign_id_0344"

Body

application/json

The Content-Type: application/json header must be specified even though the request body has no fields.

This endpoint does not accept any request parameters, but you must still send an empty JSON object ({}) in the request body.

Response

OK

Last modified on May 7, 2026