Unexpected problem

Hi, I'm receiving "The system had encountered an unexpected problem and we are tracking it with error code." error when attempting to post work visits or retrieve location details.

I'm using correct credentials and the correct bearer token but there seems to be an issue with any request I make to the sandbox API.

https://sandboxapi.equinix.com/v1/orders/workvisit/locations?detail=true

{
    "serviceDetails": {
        "schedule": {
            "endDateTime": "2020-01-20T15:54:04+00:00",
            "startDateTime": "2020-01-20T14:54:04+00:00"
        },
        "visitors": [
            {
                "company": "xxxxxxx",
                "firstName": "[Test]NTTS01",
                "lastName": "[Test]NTTS01"
            },
            {
                "lastName": "person",
                "firstName": "A",
                "company": "A corp"
            }
        ]
    },
    "contacts": [
        {
            "contactType": "NOTIFICATION",
            "userName": "xxxxxxxx"
        },
        {
            "contactType": "ORDERING",
            "userName": "xxxxxxx"
        }
    ],
    "ibxLocation": {
        "ibx": "LD4",
        "cages": [
            {
                "cabinets": [
                    "0000"
                ],
                "accountNumber": "xxxxxxx",
                "cage": "LD4:01:001S14"
            }
        ]
    },
    "customerReferenceNumber": "xxxxxxx"
}

Can anyone help me !