# Click on the details page

You will need to send the following parameters in addition to the [general parameters](/integration/tracking-interface/general-parameters.md) if you wish to pass product-click information:

| Parameter  |           | Description                                                                                                                                                                                                                                                                                                           |
| ---------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `query`    | essential | The search term for which the user has searched. In the context of a navigation click, the full category path should be sent as the query value.                                                                                                                                                                      |
| `pos`      | essential | The position of the product in the search results. The position is the absolute position. This means the first product on page 2 is number 11 if a search result page contains 10 products. The first product on page 1 is number 1.                                                                                  |
| `page`     | essential | The number of the search result page on which the selected product was displayed. The first page has the number 1.                                                                                                                                                                                                    |
| `pageSize` | essential | The number of products per search result page at the time the click was executed.                                                                                                                                                                                                                                     |
| `campaign` | essential | A product contains the field `_FFCampaign_`, if it reached the search result via a campaign. This field has the campaign ID as its value. When interacting with this product you have to send this ID with the `campaign` parameter. This way it is possible to measure the influence of the campaign manager module. |

## REST

The technical documentation of the REST-API is contained in the search application itself and can be accessed via \[your NG server]/fact-finder/swagger-ui.html . It can be also accessed via the following URL:

Swagger Link: <https://ng-demo.fact-finder.de/fact-finder/swagger-ui.html>

The interface offers not only the parameter documentation, but also the option to test a query and review the result. The documentation was created with Swagger, you can use Swagger Codegen to generate a client for it and use it for your code.

Product-click-event documentation can be accessed via the `click` method in the `tracking` resource.


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