Exception:

Temporary system throttling, deployment disabled response

Salesforce Chat REST API returns a “Temporary system throttling, deployment disabled” response when the polling for Availability check is called too frequently.

Resolution:

Please do the call for Availability Poll for every 50 seconds from any given client. Please check the “pingRate” valued passed in the Settings response. “pingRate” value provides the rate at which the visitor must ping the server to maintain the Salesforce Chat visitor session.