If a line is noticed as in the image below, adjust the Left Margin property. This issue occurs when the Left Margin property is set to a number smaller than what is necessary to create the numbers beside the symbol.

For example:
<img src=”http://www.yourserver.com/Scripts/idalin.asp?CODE_TYPE=6&BARCODE=123456789123&LEFT_MARGIN=.2″>

NOTE: This document only refers to the 2002-2007 version of the ASP Barcode Server Component for IIS. December 2007 and later versions do not have the issue described here. Obtain the latest version by updating the Support and Upgrade Subscription.