Error notification for client-side validation
The values for data type fields are validated locally in the browser. If an error occurs, the user is notified immediately before a server round trip is needed.
For example, when you specify a value in an alphabetic field, the length of the value is validated in the browser. The error is added to the queue with the asynchronous values, but the error value is not counted in the threshold for the queue.
The error values are validated the next time the queue is validated, either when the threshold or timeout for asynchronous values is reached or when a synchronous event is triggered.
Error values for smart-fill fields and simple data entry values are also not included in the queue threshold.