3 (Session level reject)

The 3 (Session Level Reject) message is used to reject messages, which cannot be properly processed due to a session-level rule violation.

Tag	Name	Type	Required	Description
45	`RefSeqNum`	`SeqNum`	yes	34 `MsgSeqNum` of the rejected message.
371	`RefTagID`	`Int`	no	Tag number of the FIX field being referenced.
372	`RefMsgType`	`String` (10)	no	35 `MsgType` of the FIX message being referenced.
373	`SessionRejectReason`	`Int`	no	Code to identify the reason for rejection. Supported 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 `7` - Decryption problem `8` - Signature problem `9` - CompID problem `10` - SendingTime accuracy problem `11` - Invalid `MsgType` (35) `13` - Tag appears more than once `14` - Tag specified out of required order `15` - Repeating group fields out of order `16` - Incorrect `NumInGroup` count for repeating group `17` - Non-data-type value includes field delimiter `99` - Other
58	`Text`	`String`	no	Message to explain the reason for rejection.