An Insufficient Funds error is returned on operations which require funding when the needed funds are not present in the profile funding the transaction. For example, creating an order to buy $100 of BTC will result in an Insufficient Funds error if the profile has an available balance less than $100. An Insufficient Funds error has the following “meta” fields:
  • profile_id: The ID of the profile funding the transaction.
  • asset: The asset needed to fund the transaction.
  • available: The amount of the needed asset in the profile’s current available balance.
  • needed: The amount of the needed asset required to fund the transaction.
To resolve an Insufficient Funds error, assets of the needed kind should be transferred to the profile identified. 
{
  "detail": "insufficient USD funds in profile b7b77d82-e6a7-4ae9-9904-36231aedf985: 50 needed, 100 available",
  "meta": {
    "asset": "USD",
    "available": "50",
    "needed": "100",
    "profile_id": "b7b77d82-e6a7-4ae9-9904-36231aedf985"
  },
  "status": 403,
  "title": "Insufficient Funds",
  "type": "https://developer.paxos.com/docs/v2/problems/insufficient-funds"
}