Oracle Message ORA-15067 - command or option incompatible with diskgroup redundancy

ERRORcommand or option incompatible with diskgroup redundancy
CAUSEAn attempt was made to use a feature which is not permitted by the diskgroups redundancy policy. Common examples are forcibly dropping a disk from an EXTERNAL REDUNDANCY diskgroup, using the FAILGROUP clauses with an EXTERNAL REDUNDANCY diskgroup, or using invalid template attributes.
ACTIONOmit the option from the command.