SOAP Web Services Governance for Token-Based Authentication
With token-based authentication, SOAP web services follows these governance guidelines based on the earlier concurrency model. With a SuiteCloud Plus license and concurrent web services user designation, you can send 10 concurrent requests. Otherwise, you're limited to one request at a time.
If you exceed these limits, the system returns the ExceededConcurrentRequestLimitFault. The corresponding error code is WS_REQUEST_BLOCKED.
As of 2017.2, token-based authentication allows a single user to send parallel requests up to the account limit, bypassing earlier concurrency limits.
This option is beneficial if web services and REST concurrency governance is enabled in your account. To check whether the concurrency governance is enabled in your account, see the Web Services and RESTlet Account Governance Field on the SOAP Web Services Preferences page, at Setup > Integration > Integration Management > SOAP Web Services Preferences.
The account limit is flexible, and it is possible to temporarily exceed the limit.
For detailed information about the changes in web services concurrency governance, see Web Services and RESTlet Concurrency Governance.