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Error Handling with the AJAX Toolkit

The AJAX Toolkit provides the ability to handle errors for synchronous and asynchronous calls:

Error Handling for Synchronous Calls

If the API call fails, then the AJAX Toolkit throws an exception. The exception contains all the available error information. For example:

Error Handling for Asynchronous Calls

For asynchronous calls, the onFailure property of the asynchronous object is called. For example:

If the onFailure property was not defined, the AJAX Toolkit pops up a new read-only browser window showing the error.