Forget to set property file path in System property
Reason
The Java SDK has not initialized in the application.
Solution
Include desk.sdk.config in system property and call the ZohoOAuthClient.getInstance(); method in the source code.
Invalid Code
Reason
The grant token has expired.
Solution
Exception while fetching access tokens from grant token. Regenerate the grant token and use it to generate a new access token within the stipulated validity time.
Error occur while getting User Info
Reason
The aaaserver.profile.READ scope was not included while generating the grant token.
Solution
Invalid OAuth scope. The user must not have specified the aaaserver.profile.READ scope while generating the grant token. Include aaaserver.profile.READ scope and generate a new grant token.
NullPointerException occur while Initialization or Authorization
Reason
The mandatory configuration keys like client_id, persistence_handler_class, redirectURL, etc., must have been left empty.
Solution
Provide the mandatory configuration keys in the property file.