It is a potentially disastrous problem. The ICAO format is DDMMSS N/S DDDMMSS E/W, and what is meant to be published. Of course, most RNAV systems use the DDMM.MM format which requires a conversion to be done between the formats. I used to do flight inspections for a number of the earlier GPS approaches, and the database integrity for the approach waypoints was always one of my major concerns. The regulatory information and technical requirements are still incompatible in many cases - be very, very careful!!