GeminiGemini
SandboxGet API key
  • Crypto Trading
  • Prediction Markets
Resources
  • Changelog

© 2026 Gemini Space Station, Inc.

Gemini Crypto Exchange LogoGemini Crypto Exchange Logo
REST APIs
    Orders
    Market Data
    Derivatives
    Margin Trading
    Staking
    Clearing
    Instant Orders
WebSocket
    AuthenticationMessage Format
    Streams
      Book TickerL2 Partial DepthL2 Differential DepthTrade StreamOrder EventsBalance Updates
    Playground
      Overviewconninfopingtimesubscribeunsubscribelist_subscriptionsdepthorder.placeorder.cancelorder.cancel_allorder.cancel_session
Agentic
FIX
    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
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
Last modified on April 17, 2026
Sequence ResetBusiness Message Reject
On this page
  • FIELDS