The Btrieve engine cancelled the current Btrieve operation at the request of the application's Btrieve callback function. The application's Btrieve callback function returned a nonzero value, indicating that the application wants to terminate the current Btrieve operation immediately. When the Btrieve engine receives such a cancellation request, it attempts to terminate the currently executing Btrieve operation and ceases to call the callback function for the duration of that operation. Btrieve may be unable to cancel the operation. However, if successful in doing so, Btrieve returns this status code.
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