Is the diskgroup mounted on all nodes, with the correct compatibility?
select GROUP_NUMBER,NAME,STATE from Gv$asm_diskgroup ;
select group_number,name,value from v$asm_attribute where name like 'compat%';
Disk group was not mounted on other two nodes of RAC, hence the issue. Once I mounted the diskgroup on two nodes of rac, addition of file to OLR was a cake walk.
Thanks for your help.