# Add value to master list

## Add value to master list

<mark style="color:green;">`POST`</mark> `https://ris.rightsline.com/v4/master-value-list/:listID/value`

This endpoint allows you to add a value to a master value list.

#### Path Parameters

| Name                                     | Type | Description                |
| ---------------------------------------- | ---- | -------------------------- |
| listID<mark style="color:red;">\*</mark> | guid | The ID of the master list. |

#### Headers

| Name                                            | Type   | Description             |
| ----------------------------------------------- | ------ | ----------------------- |
| Authorization<mark style="color:red;">\*</mark> | String | Authorization token.    |
| x-api-key<mark style="color:red;">\*</mark>     | String | Your company's API key. |
| Content-Type<mark style="color:red;">\*</mark>  | String | application/json        |

#### Request Body

| Name                                          | Type   | Description        |
| --------------------------------------------- | ------ | ------------------ |
| label<mark style="color:red;">\*</mark>       | String | Value label.       |
| description<mark style="color:red;">\*</mark> | String | Value description. |
| xref                                          | String | Value XREF.        |
| status                                        | String | Active/Inactive    |

{% tabs %}
{% tab title="409: Conflict Value already exists." %}

```javascript
{
    "message": "Char value set {master-value-list-id} already contains a value with the label {label}. Please update the label field in your request and try again."
}
```

{% endtab %}

{% tab title="404: Not Found Master value list not found." %}

```javascript
{
    "message": "No char value set found with ID {master-value-list-id}"
}
```

{% endtab %}

{% tab title="200: OK Value created successfully." %}
Value was created successfully.  New master list values are returned.

```javascript
[
    {
        "id": 1,
        "label": "A",
        "description": "the letter A",
        "xref": "A",
        "status": "Active"
    },
    {
        "id": 2,
        "label": "B",
        "description": "the letter B",
        "xref": "B",
        "status": "Active"
    }
]
```

{% endtab %}
{% endtabs %}


---

# Agent Instructions: 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:

```
GET https://api-docs.rightsline.com/config/lists/add-value-to-master-list.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.