Can you try the API as below, replace :id with actual account id
POST 'https://sailpoint.api.identitynow.com/v3/accounts/:id/disable'
Content-Type: application/json
Authorization: Bearer <TOKEN>
Body - raw json -
{
"externalVerificationId": "",
"forceProvisioning": false
}
If that still doesn’t work, try the old CC api ( can be deprecated anytime)
POST {{api-url}}/cc/api/account/provision/:id
Body - form data
disabled:true