Upload a carrier bill
Uploads a recent bill from the current carrier for a US number transfer, as multipart file (PDF, PNG or JPG, up to 10 MB). Pass the returned document_sid when you start the transfer.
Scopes: number:write
Authorizations
An API key from Settings → API keys, sent as Authorization: Bearer kb_live_…. A workspace key starts kb_; a personal key starts kbp_ and acts as its owner.
Headers
A unique key (a UUID works) for this request. Retrying with the same key returns the first answer instead of running twice.
255The API version to answer as, a date (YYYY-MM-DD). Leave it out for the current version (2026-11-07). An unknown version is refused with 400 unsupported_api_version.
2026-11-07 "2026-11-07"
Body
The multipart body of a bill upload.
A recent bill from the current carrier: PDF, PNG or JPG, up to 10 MB.
Response
Successful Response
Send it in document_sids when starting the transfer.