Solo consolidation is exercise 12/13. So after ex. 14, you have a few solo exercises 12/13; both in the student records and in the sign-off sheet.
Why would anyone would put down Ex. 14 repeatedly? It is *first* solo, there is only one per person. The only exception I can think of is if somebody starts again after a decade or so and is following the normal course.
So somebody has to fill that form in again properly...