MongoDB Error Codes

Numeric error codes returned in the MongoDB server response document under the code field. Client drivers also surface these via exception types. Codes are stable across MongoDB versions.

51 codes

• 1 InternalError
• 2 BadValue
• 4 NoSuchKey
• 9 FailedToParse
• 13 Unauthorized
• 14 TypeMismatch
• 16 InvalidLength
• 17 ProtocolError
• 18 AuthenticationFailed
• 20 IllegalOperation
• 22 InvalidBSON
• 24 LockTimeout
• 26 NamespaceNotFound
• 27 IndexNotFound
• 40 ConflictingUpdateOperators
• 43 CursorNotFound
• 46 CursorKilled
• 50 MaxTimeMSExpired
• 51 MaxTimeMSExpiredError
• 59 CommandNotFound
• 61 ShardKeyNotFound
• 66 ImmutableField
• 67 CannotCreateIndex
• 68 IndexAlreadyExists
• 72 InvalidIdField
• 73 InvalidDBRef
• 85 IndexOptionsConflict
• 86 IndexKeySpecsConflict
• 89 NetworkInterfaceExceededTimeLimit
• 91 ShutdownInProgress
• 96 InterruptedAtShutdown
• 112 WriteConflict
• 115 CommandFailed
• 120 NotPrimaryNoSecondaryOk
• 121 DocumentValidationFailure
• 125 CommandNotSupported
• 126 NamespaceExists
• 136 ExceededTimeLimit
• 148 SnapshotTooOld
• 166 TransactionTooLarge
• 167 UnknownTransactionCommitResult
• 189 ElectionInProgress
• 190 IncompleteTransactionHistory
• 197 NoSuchTransaction
• 200 QueryPlanKilled
• 251 NoSuchTransaction
• 11000 DuplicateKey
• 11600 InterruptedDueToReplStateChange
• 13297 DatabaseDifferCase
• 13388 StaleConfig
• 16755 Location16755