Desk REST API - tickets attachments SCOPE_MISMATCH error

Desk REST API - tickets attachments SCOPE_MISMATCH error

Hi there,
We are trying to add file attachment to Zoho Desk Tickets using /attachments REST API.

We have created a token with scope Desk.tickets.ALL Was stated in your API documentation.
When using this token, we are still getting 
{
    "errorCode": "SCOPE_MISMATCH",
    "message": "The OAuth Token does not contain the scope to perform this operation."
}

Attachments call and the error

Creating the token:


Appreciate your urgent help.

Best,
Snir