CRFCC0021E Unable to checkout file_path. Make sure
you have enough disk space.
Explanation
Disk space limitations might prevent making changes
to the cached version of the file to reflect changes made to the state
such as checked in, checked out, or hijacked.
System action
Changes that are made to the state are not saved.
User response
Check disk space and ensure that sufficient space
is available; then try the operation again.