Answer
Sep 14, 2021 - 06:42 AM
You can add an external ID to a category by going to your "Categories" section in your administration interface, finding the category that you'd like to edit, and click the "Edit Category" option as seen here...
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When you're on the page where you can edit the category name, click on "Show advanced options" and you'll see a field to add the external ID as seen here:
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You can add your external ID and save there.

When you're on the page where you can edit the category name, click on "Show advanced options" and you'll see a field to add the external ID as seen here:

You can add your external ID and save there.