INVALID_PATH: File location or filename was invalid(UTL_FILE) in Oracle APPS

1. Create Directory using below command

CREATE OR REPLACE directory XXDIR AS '/home/erp';

--Here change directory path(/home/erp) according to your path.

Give the required permissions to above path.

2. Connect to WinSCP/Putty and Create directory.

3. Now use the directory name in utl_file 

UTL_FILE.FOPEN('XXDIR ','file_name','R');