Why I am received the error INVALID_SESSION_INFORMATION?

You'll typically receive this error if your session has expired.

You should ensure that you handle the INVALID_SESSION_INFORMATION error within your code by creating a new session token via the API login method.

See below for best practice relating to session management.

Login & Session Management

Use Login to create a new session and Keep Alive to extend the session beyond the session expiry time. A single session can and should be used across multiple API calls/threads simultaneously. 

Please be aware that: 

• Logins sessions last up to 12 hours by default and you can use Keep Alive to extend the session beyond the stated session expiry time.  
• A single session can be used across multiple API calls/threads simultaneously.  Please note:  you don't need to make a new login request for every API call.
• You should ensure that you handle the INVALID_SESSION_INFORMATION error within your code by creating a new session token via the API login method.
• If login limits are exceeded, you'll be automatically prevented from making further login requests for a period of 20 minutes.  During this time all existing sessions will remain valid.