CAST HIGHLIGHT - API - Error - invalid_token

While using API access through Bearer token in POSTMAN got the error.
"<InvalidTokenException>
<error>invalid_token</error>
<error_description>Invalid access token: -xxxxxxx-xxxxxx</error_description>
</InvalidTokenException>"

Details

1. Check whether the token feature is activated on the client side. Please refer API/CLI User Token Management
2. Check whether the validity value set for token has expired.
3. Check whether the user access to token management is revoked, that is if they are unable to generate token.
4. Check whether the token is generated from and  API called from the same server. That is if cloud server is used, it should only be used for generating token and calling API. 

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Ticket

38062