The Auction and Classifieds products comes with default custom fields formats as a demo to show you hpw to use the custom fields. If you load the default database after installing if you installed the product yourself or if we install it for you, when you try to post an Ad or auction you will see few custom fields on the submit aution or Ad pages, these few fields also will display on other pages like view ad or view item pages. To disable these demo fields, go to your admin center, click on Custom fields Manager, then select Each format and on each format, click the "Edit" link for each field and uncheck the box "Active". Normally there are 2 formate General and Computer you need to select each format then edit the fields for each format.
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