KMIP-1.1 - Revocation Reason attribute: Modifiable by server?

Section 3.31 Revocation Reason

The Revocation Reason attribute is one of three attributes closely associated with the Revoke request:
  1. Compromise Occurrence Date
  2. Compromise Date
  3. Revocation Reason

The Attribute Rules for these three attributes are identical, with the following exception:
  Modifiable by server: No  // Compromise Occurrence Date
  Modifiable by server: No  // Compromise Date
  Modifiable by Server: Yes // Revocation Reason

As it stands, the Revocation Reason attribute is not a Read-Only attribute. Does any justification exist for the above difference between the Revocation Reason attribute and the other two? 

Regards,
... Dave