DFSR was unable to copy the contents of the SYSVOL share located at %1!S! to the SYSVOL_DFSR folder located at %2!S!. This ...

DFSR was unable to copy the contents of the SYSVOL share located at %1!S! to the SYSVOL_DFSR folder located at %2!S!. This could be due to lack of availability of disk space or due to sharing violations. 
 
Additional Information: 
Sysvol NTFRS folder: %1!S! 
Sysvol DFSR folder: %2!S! 
Error: %3!S! (%4!S!)