GeminiGemini
Demo environmentGet API key
  • Overview
  • Crypto Trading
  • Prediction Markets
  • Perpetuals
  • Stocks
  • API Reference
  • SDKs & Tools
Changelog
Gemini logoGemini logo

© 2026 Gemini Space Station, Inc.

Overview
Spot
    OverviewGet started
    Orders API
    Market Data API
    Fund Management API
    Instant Orders API
    WebSocket API
    FIX API
      Overview
        Dictionary
        ConnectingAllowed CharactersPrecision on the ExchangeStandard HeaderStandard Trailer
        Session-Level Messages
          LogonLogoutHeartbeatTest RequestResend RequestSequence ResetRejectBusiness Message RejectEstablishing a ConnectionEnding a ConnectionWhen Can Sequence Numbers Reset
      Order Entry
      Market Data
      Drop Copy
Margin
    Overview
    Margin REST API
      Get Margin Account SummaryGet Margin Interest RatesPreview Margin Order Impact
Staking
    Overview
    Staking REST API
      List Staking BalancesStake Crypto FundsUnstake Crypto FundsList Staking Event HistoryList Staking RatesList Staking Rewards
Clearing
    Clearing REST API
      Clearing Orders
      Broker & Trade Operations
Session-Level Messages

Reject <3>

Gemini sends a Reject <3> message when a message is received but cannot be properly processed due to a session-level rule violation. A reject is typically a serious error in the trading application's session logic. A session reject would also be generated if client message rate has exceeded the allocated throttle.


FIELDS

TagNameReqDescription
Standard HeaderYMsgType = 3
45RefSeqNumYMsgSeqNum <34> of the rejected message.
58TextNExplanation for rejection
371RefTagIDNThe tag number of the FIX field being referenced.
372RefMsgTypeNThe MsgType <35> of the rejected message.
373SessionRejectReasonNCode to identify the reason for the Reject <3> message.

Valid values:
0 = Invalid tag number
1 = Required tag missing
2 = Tag not defined for this message type
3 = Undefined Tag
4 = Tag specified without a value
5 = Value is incorrect (out of range) for this tag
6 = Incorrect data format for value
10 = SendingTime <52> accuracy problem
11 = Invalid MsgType <35>
99 = Other
Standard TrailerY
Sequence ResetBusiness Message Reject
On this page
  • FIELDS