API Appendix

Error List

Error Code	Error Message
-2398	{API} is not supported for the current scanner.
-2436	Mixed Content: The page at {URL} was loaded over HTTPS, but requested an insecure resource {serverUrl}/ddm/18625/ddm/SearchScanner. This request has been blocked; the content must be served over HTTPS.
-2444	A license can only be specified once and has already been set using the ProductKey API.
-2543	You are using two different generations of Dynamsoft licenses. Please check the “Dynamsoft.DWT.ProductKey” specified in your application.
-2544	The method SelectDeviceAsync() must be invoked before the current operation.
-2545	The proxy server URL is invalid.
-2546	The license is invalid.
-2601	Failed to connect to the Dynamic Web TWAIN Service. Please make sure Dynamic Web TWAIN Service is running or the certificate is valid.
-2602	The parameter “SendTo” is invalid.
-2603	{API} is not supported for your Operating System.
-2604	Failed to connect to the Proxy Server. Please make sure the Proxy Server is configured successfully, Dynamic Web TWAIN Service is running, or the certificate is valid.
-2605	The synchronized method {API} is not supported under the current settings.
-2606	The asynchronized method {API} is not supported under the current settings.
-2607	The device selected was not found under the current service object.
-2608	IfShowFileDialog cannot be set to true when Object is created by CreateRemoteScanObjectAsync.
-2609	LoadDibFromClipboard is not supported when Object is created by CreateRemoteScanObjectAsync.
-2610	OpenSource is not supported when Object is created by CreateRemoteScanObjectAsync. Please use OpenSourceAsync instead.
-2613	The Dynamic Web TWAIN Service on [’ + serviceName + ‘] has been stopped.
-2620	The RemoteScan object has been disposed.
-2623	Saving multiple images is not allowable when the selected output format is BMP, JPG or PNG.
-2825	Failed to setup the Default Dynamic Web TWAIN Service.
-2826	Failed to connect the Dynamic Web TWAIN Service on [’ + name + ‘].

Dynamsoft License Server Error List

Error Code	Error Message
-2611	The license for the Barcode module is invalid.