Gah, all of a sudden I started getting a permission error when trying to approve a Sales Order. All that was working a minute ago (updating

orderStatus

to

_pendingFulfillment

)

<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>

I already have the Sales Order Approval permission set to "Full" on my web service role. Anything else I might be missing?