AWS Amazon CloudWatch Error Codes

More than one process tried to modify a resource at the same time.

This operation attempted to create a resource that already exists.

Some part of the dashboard data is invalid.

The specified dashboard does not exist.

Request processing has failed due to some unknown error, exception, or failure.

Data was not syntactically valid JSON.

The next token specified is invalid.

Parameters were used together that cannot be used together.

The value of an input parameter is bad or out-of-range.

The operation exceeded one or more limits.

The quota for alarms for this customer has already been reached.

An input parameter that is required is missing.

The named resource does not exist.

The named resource does not exist.