> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/10.2-data-integration/advanced-topics-pentaho-data-integration-overview/work-with-the-streamlined-data-refinery/use-the-streamlined-data-refinery/building-blocks-for-the-sdr/using-the-annotate-stream-step/use-the-annotate-stream-step/creating-link-dimensions/create-a-link-dimension.md).

# Create a link dimension

This step assumes you have created a shared dimension which you want to use.

These steps guide you through creating a link dimension using the Annotate Stream step.

1. If you haven't done so already, complete steps 1-7 in [Use the Annotate Stream step](/pdia-data-integration/10.2-data-integration/advanced-topics-pentaho-data-integration-overview/work-with-the-streamlined-data-refinery/use-the-streamlined-data-refinery/building-blocks-for-the-sdr/using-the-annotate-stream-step/use-the-annotate-stream-step.md).
2. Select **Link Dimension** from the **Actions** drop-down menu. The **Name - Value** table auto-populates with a list of annotation properties for the dimension.

   | Component        | Description                                                                                                                                                                                                                                                                                                                                                         |
   | ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
   | Dimension Name   | Enter a name for the dimension. Note that you can overwrite the dimension name set in the [Shared Dimension](/pdia-data-integration/10.2-data-integration/advanced-topics-pentaho-data-integration-overview/work-with-the-streamlined-data-refinery/use-the-streamlined-data-refinery/building-blocks-for-the-sdr/using-the-shared-dimension-step-for-sdr.md) step. |
   | Shared Dimension | Enter or select a previously created **Shared Dimension** to link to from the drop-down menu.                                                                                                                                                                                                                                                                       |

   ![Create link dimension](/files/D2BquXTncwZWF1XUn7UT)
3. Use the **Previous** and **Next** buttons to navigate through the fields. When finished, click **OK** to save your annotations and close the dialog box, or **Cancel** to close the dialog box without saving your annotations.

Remember that before your link dimension can be used by others, you must create a dimension key for the shared dimension to link to. When creating annotations, you can use a single field more than once, so you will be able to use the same field for both the key and to create annotations.


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