`Document`

Uploaded supporting file for individual customers. Business customers use the richer BusinessDocument shape which accepts a larger purposes enum.

Field	Type	Required	Notes
`purposes`	array of `proof_of_account_purpose` \| `proof_of_address` \| `proof_of_individual_name_change` \| `proof_of_relationship` \| `proof_of_source_of_funds` \| `proof_of_source_of_wealth` \| `proof_of_tax_identification` \| `other`	yes
`file`	string (base64 data-uri)	yes	Min 200×200px, max 24 MB.
`description`	string	conditional	Required when `purposes` includes `other`.

Example

{
  "purposes": ["proof_of_address"],
  "file": "data:application/pdf;base64,…"
}