# Device points deletion

This document import allows you to mark device points for deletion.

Each line in the document is a user agent identifier that is linked to a device point (or is a device point id directly). For each of those identifiers, the job will find its associated device point and delete it. Note that a device point may be linked to multiple user agent identifiers, all of which will be deleted once their device point is (including user agent identifiers that may not appear in your document).

{% hint style="info" %}
This is only supported for datamarts using a UserPoint system version of `v202205` or later. 

**It only deletes the device point and its identifiers but not the associated UserPoint.**
{% endhint %}

## How-to

1. Use the [bulk import ](/data-streams/data-ingestion/bulk-processing.md)endpoints to create a [document import](/data-streams/data-ingestion/bulk-processing.md#document-import) with the `USER_DEVICE_POINTS_DELETION` document type and `APPLICATION_X_NDJSON` mime type. Only `ndjson` data is supported.
2. Create an[ execution ](/data-streams/data-ingestion/bulk-processing.md#create-an-execution)with your commands formatted in `ndjson`. Each line represents a user agent.

### Example

```
# Create the document import
curl -X POST \
  https://api.mediarithmics.com/v1/datamarts/<DATAMART_ID>/document_imports \
  -H 'Authorization: <YOUR_API_TOKEN>' \
  -H 'Content-Type: application/json' \
  -d '{
	"document_type": "USER_DEVICE_POINT_DELETION",
	"mime_type": "APPLICATION_X_NDJSON",
	"encoding": "utf-8",
	"name": "<YOUR_DOCUMENT_IMPORT_NAME>"
}'
```

```
# Create the execution
curl -X POST \
  https://api.mediarithmics.com/v1/datamarts/<DATAMART_ID>/document_imports/<DOCUMENT_IMPORT_ID>/executions \
  -H 'Authorization: <API_TOKEN>' \
  -H 'Content-Type: application/x-ndjson' \
  -d '
    { "type": "USER_AGENT", "user_agent_id": "vec:89998434" }
    { "type": "USER_AGENT", "user_agent_id": "udp:987654" }
  '
```

Please note that the uploaded data is in `ndjson` and not `json`. That means the different deletions are not separated by commas, but by a line separator.

A list of possible `user_agent_id` values can be found at [UserDeviceTechnicalId](/user-points/user-identifiers/userdevicetechnicalid.md#user_agent_id)

{% hint style="info" %}
If you want to pass device point ids directly ("udp:987654") you must do so using the `USER_AGENT` type.
{% endhint %}


---

# 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://developer.mediarithmics.io/data-streams/data-ingestion/bulk-processing/deletions/device-points-deletion.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.