http code 400
{
 "error_category": "INVALID_INPUT",
 "error_code": "INVALID_LINK_TOKEN",
 "error_message": "Invalid link_token provided",
 "display_message": null
}

Common causes

• Link tokens are in the format: link-<environment>-<identifier>
• The link_token has expired. A link_token lasts at least 30 minutes before expiring.
• The link_token was already used. A link_token can only be used once.
• The link_token was created in a different environment than the one it was used with. For example, a Sandbox link_token was used in Production.
• A user entered invalid credentials too many times during the Link flow, invalidating the link_token.

Troubleshooting steps

• Confirm that the link_token is from the correct environment.
• Generate a new link_token for initializing Link with and re-launch Link.