Is it possible to approve a sales order via the web services API? I think I found mentions of updating the

orderStatus

field to

_pendingFulfillment

, but I'm getting a weird error:

<platformCore:statusDetail type="ERROR">
            <platformCore:code>INSUFFICIENT_PERMISSION</platformCore:code>
            <platformCore:message>You do not have permissions to set a value for element orderstatus due to one of the following reasons: 1) The field is read-only; 2) An associated feature is disabled; 3) The field is available either when a record is created or updated, but not in both cases.</platformCore:message>
          </platformCore:statusDetail>

I have granted Full level access to Sales Order and Sales Order Approval, but I'm not sure if I need anything else. Or maybe I need to enable a NetSuite feature that I'm not aware of?