Emergency access code format requirements are controlled by token policies assigned to each security domain. To change the format settings for a security domain, you must edit the assigned token policy.
In the Security Console, click Authentication > Policies > Token Policies > Manage Existing.
Use the search fields to find the token policy that you want to edit.
From the search results, click the token policy that you want to edit.
From the context menu, click Edit.
In the Emergency Access Code Format section, select the types of characters that you want to require for emergency access codes.