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I have a France-issued Schengen visa until 24/06/2015, and I would like to visit Spain between 21-27/06/2015. When I applied to visa to Spain consulate, they gave me a Schengen visa from 25/06/2015. So I have to enter to Spain with France-issued Schengen visa, and when I will want to leave, I will be used only 3 days from my new visa.
Later in July, I have to go to Germany, I did apply to Spain first because that was my first visit. I will stay in Germany around 10 days. I don't know if these 2 days visit are enough for them to enter Germany with Spain-issued Schengen visa.
It seems that two Schengen visas can not be issued same time. Is that true?