NCM Plugin Fail Backup TFTP No route to host

NCM Plugin Fail Backup TFTP No route to host

Hello,
I'm trying to configure backup with NCM
during testing credential fail with this error

copy startup-config tftp://<OPManager server IP>/2_ConfigFile.txt vrf default

Trying to connect to tftp server......

TFTP put operation failed:No route to host  

the error is because in this switch vrf is not configured  with default name but with "custom" name.
where can I change it?
Is it possible to have different "custom" name based on device?

                New to ADSelfService Plus?