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@BevanandTina  RE: I am trying to create a work description field that will allow me to state the original issue and the work done to fix the issue. 

Usually this is done by adding text to the Description column on the invoice table. You can add as many rows as you want that contain only descriptions, and the descriptions can be 4k characters long.  You can add the custom text to a row with an item or to a row without.

Above, the text is on its own row, but I could have also replaced the text for the 1000 item with the custom text.