ERROR WHILE CHANGING THE STATUS OF TEMPLATE

 DEAR GURU'S

I AM GETTING ERROR MSG WHILE CHANGE STATUS FROM UNAPPROVED TO APPROVED STATUS IN PROJECT TEMPLATE.

WHILE APPROVING I AM GETTING MSG LIKE TIHIS

All mandatory class categories have not been classified.

Cause: All mandatory class categories must be classified before this project can be authorized. 

Action: Please enter class code(s) for each mandatory class category.

REGARDS