Creates an accounting deduction against the tenant's deposit for the given leasing contract.
This endpoint triggers the dedicated service that builds the accounting transaction and links it
to the refund deposit accounting event group.

Request body format:
Send description and amount_in_cents at the root of the JSON body, as shown below.
A body wrapped in an accounting_transaction object is accepted as well.

Optional document attachment:
You can attach a supporting document to the deduction by providing a document_url parameter
with a publicly accessible URL to the file. The document will be automatically downloaded and
stored as a supporting document for the deduction.

Optional invoice cross-reference:
Send invoice_id (the invoice's public id) to link the deduction line to an invoice for
cross-reference. This has no financial impact.