AWS SDK for .NET Documentation
SequenceNumberForOrdering Property
AmazonAmazon.Kinesis.ModelPutRecordRequestSequenceNumberForOrdering Did this page help you?   Yes   No    Tell us about it...
Guarantees strictly increasing sequence numbers, for puts from the same client and to the same partition key. Usage: set the SequenceNumberForOrdering of record n to the sequence number of record n-1 (as returned in the PutRecordResult when putting record n-1). If this parameter is not set, records will be coarsely ordered based on arrival time.

Constraints:

Pattern
0|([1-9]\d{0,128})

Declaration Syntax
C#
public string SequenceNumberForOrdering { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)