# Reject <3>
#
Gemini sends a [Reject `<3>`](https://www.onixs.biz/fix-dictionary/4.4/msgType_3_3.html) 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.
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### FIELDS
| Tag | Name | Req | Description |
| --- | ------------------------------------------------------------------------------- | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| | [Standard Header](/trading/fix/overview/standard-header) | Y | [MsgType](https://www.onixs.biz/fix-dictionary/4.4/msgs_by_msg_type.html) = `3` |
| 45 | [RefSeqNum](https://www.onixs.biz/fix-dictionary/4.4/tagNum_45.html) | Y | [MsgSeqNum `<34>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_34.html) of the rejected message. |
| 58 | [Text](https://www.onixs.biz/fix-dictionary/4.4/tagNum_58.html) | N | Explanation for rejection |
| 371 | [RefTagID](https://www.onixs.biz/fix-dictionary/4.4/tagNum_371.html) | N | The tag number of the FIX field being referenced. |
| 372 | [RefMsgType](https://www.onixs.biz/fix-dictionary/4.4/tagNum_372.html) | N | The [MsgType `<35>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_35.html) of the rejected message. |
| 373 | [SessionRejectReason](https://www.onixs.biz/fix-dictionary/4.4/tagNum_373.html) | N | Code to identify the reason for the [Reject `<3>`](https://www.onixs.biz/fix-dictionary/4.4/msgType_3_3.html) 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>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_52.html) accuracy problem
`11` = Invalid [MsgType `<35>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_35.html)
`99` = Other |
| | [Standard Trailer](/trading/fix/overview/standard-trailer) | Y | |