AWS SDK Version 3 for .NET
API Reference

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Uploads a batch of log events to the specified log stream.

You must include the sequence token obtained from the response of the previous call. An upload in a newly created log stream does not require a sequence token. You can also get the sequence token in the expectedSequenceToken field from InvalidSequenceTokenException. If you call PutLogEvents twice within a narrow time period using the same value for sequenceToken, both calls might be successful or one might be rejected.

The batch of events must satisfy the following constraints:

If a call to PutLogEvents returns "UnrecognizedClientException" the most likely cause is an invalid AWS access key ID or secret key.


For .NET Core this operation is only available in asynchronous form. Please refer to PutLogEventsAsync.

Namespace: Amazon.CloudWatchLogs
Assembly: AWSSDK.CloudWatchLogs.dll
Version: 3.x.y.z


public virtual PutLogEventsResponse PutLogEvents(
         PutLogEventsRequest request
Type: Amazon.CloudWatchLogs.Model.PutLogEventsRequest

Container for the necessary parameters to execute the PutLogEvents service method.

Return Value
The response from the PutLogEvents service method, as returned by CloudWatchLogs.


DataAlreadyAcceptedException The event was already logged.
InvalidParameterException A parameter is specified incorrectly.
InvalidSequenceTokenException The sequence token is not valid. You can get the correct sequence token in the expectedSequenceToken field in the InvalidSequenceTokenException message.
ResourceNotFoundException The specified resource does not exist.
ServiceUnavailableException The service cannot complete the request.
UnrecognizedClientException The most likely cause is an invalid AWS access key ID or secret key.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

See Also