# How do I get a DOI for a secondary dataset that I have created?
NILU, on behalf of the ACTRIS project, may issue a DOI on secondary datasets, this is through the [DataCite metadata service](https://schema.datacite.org/). If you want us to issue a DOI, there are two things to consider. First, we need for you to supply us with metadata that follows the XML format (see whats required below). Secondly, we will need to create a landing page for the DOI, and therfore you will also need to supply some information with regards to this. The data resource you supply us with will be available through the presentation page on a ftp server.
NILU, on behalf of the ACTRIS project, may issue a DOI on secondary datasets or other data products related to ACTRIS. Issuing of the DOI is done through the [DataCite metadata service](https://schema.datacite.org/).
If you want us to issue a DOI, there are two things to consider. First, we need for you to supply us with metadata that follows the XML format (see whats required below). Secondly, we will need to create a landing page for the DOI, and therfore you will also need to supply some information with regards to this in a text file. The data resource you supply us with will be available through the presentation page on a ftp server.
## Supplying the metadata:
* * *
[Here is an example of metadata elements supplied as xml](https://git.nilu.no/actris/doi-instructional/blob/master/example-doi.xml)
In order to generate the DOI, we will need an xml document containing at least the mandatory metadata elements, as well as a text file containing the information for the presentation page.
### Metadata elements
* Name of the creator(s) of the dataset and affiliation
The landing page is not so strict in terms of content and shape, but should include a description of the elements below. [Here is an example.](http://actris.nilu.no/Content/?pageid=39a25e967ef3481b8152f654434c258c)
* * *
The landing page is not so strict in terms of content and shape, but should include a description of the elements below, [here is an example.](http://actris.nilu.no/Content/?pageid=39a25e967ef3481b8152f654434c258c).
[Here is an example of a landingpage text file]()
### Include the following information:
* Titel
* Image (plot etc.) that describes the dataset
* Image (plot etc.) that describes the dataset, not mandatory but preferable.
* Data policy
* Description of data file (s), including contact person for the specific dataset/subset of the dataset (in case there is data from multiple stations).