I am planning to go to germany for 5 days, but my insurance policy is good for 15 days, will it be a problem on my visa application? The first application was refused so i decided to shorten the length of my stay.
The insurance requirement is a minimum.
You can be insured for longer and for more coverage, without the officials even taking note.
As you have shortened your travel plans, having a longer coverage is easy to explain.
Many people travel to several countries within a single travel and they usually have insurance for the whole travel, so longer than their time in any one country.