EBS 12.1 , EBS 12.2 Error: ORA-29283: invalid file operation: cannot open file , custom forms showing error

EBS 12.1 , EBS 12.2 Error: ORA-29283: invalid file operation: cannot open file , custom forms showing error

ORA-29283: invalid file operation: cannot open file

ORA-06512: at "SYS.UTL_FILE", line 536

ORA-06512: at "SYS.UTL_FILE", line 41

ORA-06512: at "SYS.UTL_FILE", line 478

Cause: Its due to EBS 12.1.3 or EBS 12.2 CUSTOM_TOP missing file frms.output 

Fix:

Check file exists or not under custom top, if not then create it

 For example XXCUST_TOP is your custom top then

Source Run file system env 

cd $XXCUST_TOP/customdir/

touch frms.output 

chmod 777 frms.output