> For the complete documentation index, see [llms.txt](https://docs.exads.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exads.com/api/ad-placement-api/ad-plac-error-examples.md).

# Error Examples

## Zone ID not recognised

In the example below, ads are requested for multiple zones and errors are returned for some zones. The zone ID was not found for two of them.

### Request: JSON <a href="#request-json" id="request-json"></a>

```json
{
    "user": {
        "ip": "179.127.135.233",
        "ua": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0"
    },
    "zones": [
        {
            "id": 4030198
        },
        {
            "id": 4030197
        },
        {
            "id": 4030194
        }   
    ]
}
```

### Response: JSON <a href="#response-json" id="response-json"></a>

```json
{
    "zones": [
        null,
        {
            "idzone": 4030197,
            "type": "banner",
            "data": {
                "url": "https://main.exads.rocks/click.php?data=H4sIAAAAAAAAA0WPO27DQAxEr.LG7YK__bBMk8ZFzrArrZAiQQLYgFzM4UNZRUCCIMjhw_ACI69SHNYIn4_H7_2qb1d5j9z3Pc1nX.9p.fkGQAAXUvGj4n_D1RNLTaw5iSpgVoQbcbCV2CsytZgyNACBCZASPSUTOAIsSQ1qlFsOVWXeNKDDZ1cuS56j5o1Gtz7K1BonhPHVI09nB_GC1_gMtcwcTl4dHd8dIqdT2k6h4eOG5kK1.7Kts.ncyuijs64unlerZf4BvX2zxCABAAA-",
                "impression": "https://syndication.exads.rocks/cimp.php?t=imp&api=1&data=H4sIAAAAAAAAAzVPSW4DMQz7Sj8wBrV5ya1FX9CiD7An9qlFD73MQY+PkmlEG5ZMwqQZjI2wMb0QLpovKk6lJeKSSCyxiL99vLqSz6Nf/9L+++MqrFKeRy3aqrlCQK24oUbfCufmqpmpgpyyiyMgCqsWr8WQtHqBf32+P3aonF2Agw3R320pRJyQyBtc4xJHUJxEvRAtiaijzS6Ud5uj2MLo2keekevuMb57rEdonEj4p54QNaL45UbngHvwKPiDjqqnPPKpwstqmHNera9OZe053DCHrdGXGPUbbttiKlIBAAA=",
                "image": "https://static.exads.rocks/library/432437/42ec0144a74a1663f2973ad3070234f8e5633855.jpg"
            }
        },
        null
    ],
    "errors": {
        "0": [
            "Zone 4030198 not found"
        ],
        "2": [
            "Zone 4030194 not found"
        ]
    }
}
```

## Zone contains unacceptable field <a href="#zone-contains-unacceptable-field" id="zone-contains-unacceptable-field"></a>

In this example, the request contains the unacceptable field `testing`.

### Request: JSON <a href="#request-json-1" id="request-json-1"></a>

```json
{
    "user": {
        "ip": "179.127.135.233",
        "ua": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0",
    },
    "zones": [
        {
            "id": 4030197,
            "testing": false
        }
    ]
}
```

### Response: JSON <a href="#response-json-1" id="response-json-1"></a>

```json
{
    "errors": [
        {
            "[zones][0][testing]": "This field was not expected."
        }
    ]
}
```

## Required field missing and incorrect field added <a href="#required-field-missing-and-incorrect-field-added" id="required-field-missing-and-incorrect-field-added"></a>

In this example, the request is missing the required field `IP`, and contains the unacceptable field `testing`.

### Request: JSON <a href="#request-json-2" id="request-json-2"></a>

```json
{
    "user": {
        "ua": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0",
        "testing": false
    },
    "zones": [
        {
            "id": 4030197
        }
    ]
}
```

### Response: JSON <a href="#response-json-2" id="response-json-2"></a>

```json
{
    "errors": [
        {
            "[user][ip]": "This field is missing."
        },
        {
            "[user][testing]": "This field was not expected."
        }
    ]
}

```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.exads.com/api/ad-placement-api/ad-plac-error-examples.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.