Work Order Charge Creation Fails with “CostOrganizationId Isn’t Valid”

Summary:

I’m configuring Oracle Fusion Service Logistics and encountering an error when creating a Work Order Charge (and related debrief transactions).

Content (please ensure you mask any confidential information):

Error
The value of the attribute CostOrganizationId isn’t valid.

What I’ve Verified

Cost Organizations are configured and active.
Cost Organization Relationships are configured.
Inventory Organizations are assigned.
Cost Books are assigned.
Item Validation Organization is configured.
Stocking Locations are configured and usable.
Field Service Technicians are configured and assigned to stocking locations.
Billing Types (Labor, Material, Expense, Consumable) are configured.
Items exist and are assigned to inventory organizations.