Why can't I save to my sd card?

[AC Question]

I have an s7 and have inserted a micro sd card. I set the camera to save photos to the sd card but when I take a picture I get a message saying "couldn't save to sd card, default location set to device".
Also if I try to move any files, I get a message saying "unable to move file".

 

[Abdullah Gul Awan]

Try Different sd card. Your sd card maybe corrupted