Write Protected Marker FIles

I have been loading unique marker files with no problem but then I can't load anymore and get this fail message:

Warning: Failed to move file: /tmp/phpZ7SWE2 to /var/www/html/components/com_vmap/images/markers/Blackburn-with-Darwin.png

Is there an upper limit on this directory?

Hello,
There is no limit on the directory, Please check with your server team. If there is some permission or space issue.

Thanks Daniel

Exactly right, the IT Team had updated the server.