# Set metadata for a face-to-face transaction

Endpoint: POST /p2p/transactions/{transaction_id}/metadata
Version: 0.1.0
Security: OAuth2

## Path parameters:

  - `transaction_id` (integer, required)

## Response 400 fields (application/json):

  - `code` (string, required)
    Example: "negative_price"

  - `error` (string, required)
    A contextual description of the error that occurred. When
handling errors the  field should be used to determine
the type of error that occurred, as the text in the 
field may change unexpectedly.
    Example: "`price` cannot be negative"