# Error Handling

During the verification process, if an error occurs, the JS-SDK will throw the error. 

The following list describes the possible error throws from JS-SDK.

<table><thead><tr><th width="176">Error Code</th><th>Description</th></tr></thead><tbody><tr><td>100000</td><td>The verification node does not match the node assigned to the task.</td></tr><tr><td>100001</td><td>The user does not installed the TransGate</td></tr><tr><td>100002</td><td>Illegal appid</td></tr><tr><td>100003</td><td>Schema id dose not exist</td></tr><tr><td>100004</td><td>Request task info error</td></tr><tr><td>100005</td><td>Can not connect the verify node</td></tr><tr><td>110001</td><td>User do not meet the requirements</td></tr><tr><td>110002</td><td>The user canceled the verification</td></tr><tr><td>110003</td><td>An unexpected error was encountered</td></tr></tbody></table>

DApps should catch the error and handle it appropriately.


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