Create versioned layer using HERE platform portal

At the end of this article, you will be able to create a versioned layer using HERE platform.

Create your versioned layer

Your data in HERE platform should be structured as catalog->layer->partition->actual data. You can read about HERE platform concepts in Data User Guide

1. Sign into your realm in HERE platform: If you are not sure how to sign in, then search for Sign into HERE platform in Knowledge Base.
2. Create a catalog: You can read in detail on Create Catalog or search our Knowledge Base for Create catalog using HERE platform. We have created a catalog with name: sample-catalog-name and id: sample-catalog-id for this example.
3. Create a versioned layer: You can read in detail on Create Layer
1. Search and Click on your just created catalog from the Data tab. This takes you to your catalog's detail page.
2. To add a new layer to your catalog, Click on "Add new layer" button found on the top right corner.
3. In the form to add new layer, provide your layer details for example as shown below:

| Field | Description | Required/Optional | Example Value |
| --- | --- | --- | --- |
| Layer Name | Name of your layer | Required | sample-version-layer-name |
| Layer Id | Id of your layer. This must be unique within your catalog | Required | sample-version-layer-id |
| Layer Summary | Summary of your layer. This will appear in the list of layers in Catalog details page | Required | This is a sample versioned layer |
| Layer Description | Description of your layer. This will appear in layer's detail page(once you click on a particular layer) | Required | This is a sample versioned layer |
| Tags | Terms/Keywords you want your layer to be found by. It will be easier for you to find your related catalogs with these layer tags later | Optional but recommended | sample-layers |
| Cost Allocation Tags | Tags which are used to group billing records together. Only alphanumeric characters allowed | Optional but recommended | sampleversioned |
| Select Layer Type | Type of layer you want to create | Required | Versioned |
| Partitioning | Type of Partitioning you want to create | Required | Generic |
| Content Type | Type of your data | Required | Format can be text or csv |
| Content Encoding | Indicates whether you need your data to be compressed or not | Defaulted to uncompressed | Uncompressed |
| Schema | The structure of your data | Defaulted to None | None |
| Coverage | Geographic area that your data covers | Optional | Europe -> Germany |
4. You can choose any of the mentioned partitioning, content type, content encoding and coverage from the list provided depending on your data. For this tutorial, we are sticking to the above inputs.
5. Click Save Layer button at the bottom
6. It may take some time to create your layer. You can see "Updating Catalog" progress symbol in your catalog's detail page and "Creating Layer" progress symbol next to your layer name. You can also timely refresh your page to check whether your layer is created.

You have successfully created a versioned layer. If you are interested in reading about how to upload data to this versioned layer then search our Knowledge Base for "Upload data to versioned layer"