Go into the Utility Menu and choose Product Code File:
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Pull up the Product Code. For a list of product codes click on the icon to the right of the box.
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Choose Product Code from list if needed:
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Change status to D ( DELETED). This is located at the top right corner of the screen.
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***NOTE*** IF there are totals for the month, posted to that Product Code you will not be able to delete until you have closed that month.