Categories are essential to successfully uploading your auctions into the software. For example when you are creating items you will need to input a category (either just the ID for bulk upload items, or the category title for adding individual items). This will appear as follows in your Item List: 

Or as follows in the item Edit view: 

It is very important to provide these to us in the correct format. This is to ensure that you can take advantage of features such as Related items. This is shown to the public when a user clicks into an item and the appearance is driven by your category structure, as follows: 

As such, please ensure that you send us your Categories in the following format: 

Parent category : Child category 

For example, you could send us the following list of categories to upload: 

Once the categories are uploaded into the system, we will send you back a list of category IDs relating to those you have sent us. This will look something like the following: