CASKC1002I ES concurrent request limit: number, actual: number

This states that the maximum number of user requests that were processed by the enterprise server concurrently during the session exceeded the maximum allowed. This message is displayed when you stop the enterprise server and also when the maximum number of concurrent user requests is exceeded.

Resolution:

The maximum number of concurrent processes allowed is determined by the 'Requested Licenses' value - this can be increased to allow more concurrent processes.

See the section To Change the Number of ES licenses for details on how to do this.