Repeated Form Fields in the payload

We have an integration for unbounce, one of our customer’s /pages/<page_id>/fom_fields endpoint, return repeated set of same form fields , with same ids, which is causing an issue while mapping fields during webhook creation, as the /pages/<page_id>/integrations/<integration_id>/field_map , returns a 400 due to repeated field ids, can you please suggest a solution to this issue, and also let us know why this is happening , so that we can inform our customers to avoid it in future. Below is the Data from customer’s /form_fields endpoint for reference ->

{
    "metadata": {
        "documentation": "https://api.unbounce.com/doc/form_fields?secure=true",
        "location": "https://api.unbounce.com/pages/1bd98ba5-b355-4fe6-84f6-7a8fe057986c/form_fields?secure=true",
        "count": 30,
        "related": {
            "page": "https://api.unbounce.com/pages/1bd98ba5-b355-4fe6-84f6-7a8fe057986c?secure=true"
        }
    },
    "formFields": [
        {
            "name": "Nombre",
            "id": "nombre",
            "type": "text",
            "validations": {
                "required": false
            }
        },
        {
            "name": "Apellidos",
            "id": "apellidos",
            "type": "text",
            "validations": {
                "required": false
            }
        },
        {
            "name": "Email",
            "id": "email",
            "type": "text",
            "validations": {
                "required": false,
                "email": true
            }
        },
        {
            "name": "Celular",
            "id": "celular",
            "type": "text",
            "validations": {
                "required": true,
                "phone": true
            }
        },
        {
            "name": "utm_source",
            "id": "utm_source",
            "type": "hidden"
        },
        {
            "name": "utm_medium",
            "id": "utm_medium",
            "type": "hidden"
        },
        {
            "name": "utm_content",
            "id": "utm_content",
            "type": "hidden"
        },
        {
            "name": "utm_campaign",
            "id": "utm_campaign",
            "type": "hidden"
        },
        {
            "name": "gclid",
            "id": "gclid",
            "type": "hidden"
        },
        {
            "name": "destinos",
            "id": "destinos",
            "type": "hidden"
        },
        {
            "name": "Nombre",
            "id": "nombre",
            "type": "text",
            "validations": {
                "required": false
            }
        },
        {
            "name": "Apellidos",
            "id": "apellidos",
            "type": "text",
            "validations": {
                "required": false
            }
        },
        {
            "name": "Email",
            "id": "email",
            "type": "text",
            "validations": {
                "required": false,
                "email": true
            }
        },
        {
            "name": "Celular",
            "id": "celular",
            "type": "text",
            "validations": {
                "required": true,
                "phone": true
            }
        },
        {
            "name": "utm_source",
            "id": "utm_source",
            "type": "hidden"
        },
        {
            "name": "utm_medium",
            "id": "utm_medium",
            "type": "hidden"
        },
        {
            "name": "utm_content",
            "id": "utm_content",
            "type": "hidden"
        },
        {
            "name": "utm_campaign",
            "id": "utm_campaign",
            "type": "hidden"
        },
        {
            "name": "gclid",
            "id": "gclid",
            "type": "hidden"
        },
        {
            "name": "destinos",
            "id": "destinos",
            "type": "hidden"
        },
        {
            "name": "Nombre",
            "id": "nombre",
            "type": "text",
            "validations": {
                "required": false
            }
        },
        {
            "name": "Apellidos",
            "id": "apellidos",
            "type": "text",
            "validations": {
                "required": false
            }
        },
        {
            "name": "Email",
            "id": "email",
            "type": "text",
            "validations": {
                "required": false,
                "email": true
            }
        },
        {
            "name": "Celular",
            "id": "celular",
            "type": "text",
            "validations": {
                "required": true,
                "phone": true
            }
        },
        {
            "name": "utm_source",
            "id": "utm_source",
            "type": "hidden"
        },
        {
            "name": "utm_medium",
            "id": "utm_medium",
            "type": "hidden"
        },
        {
            "name": "utm_content",
            "id": "utm_content",
            "type": "hidden"
        },
        {
            "name": "utm_campaign",
            "id": "utm_campaign",
            "type": "hidden"
        },
        {
            "name": "gclid",
            "id": "gclid",
            "type": "hidden"
        },
        {
            "name": "destinos",
            "id": "destinos",
            "type": "hidden"
        }
    ]
}

as you will observe above, same set of field ids i.e. nombre,apellidos,email,celular,utm_source,utm_medium,utm_content,utm_campaign,gclid,destinos are repeated thrice