1. A sewing data processing apparatus which processes sewing data used to sew a cloth piece having a size and shape which is determined by applique pattern data to a work cloth by using a sewing machine so that an applique pattern including the cloth piece may be formed on the work cloth, the apparatus comprising: an IC tag area acquisition device that acquires an IC tag area which is determined on the basis of a size and shape of an IC tag; a determination device that determines whether the IC tag area can be included in an applique pattern area which is determined on the basis of the applique pattern data; and a location setting device that, if the determination device determines that the IC tag area can be included in the applique pattern area, sets positions of the applique pattern area and the IC tag area in a sewable area of the sewing machine in such a manner that the IC tag area is positioned in the applique pattern area.