Is Cost Module Config required if all items are uncosted and subinventory is tracked/uncosted?

Summary:

Use case-

All items are flagged and Inventory/Stockable but Uncosted

All Subinventories are Non-Asset and tracked.

We have an item returned on RMA and it is staying as Pending Interface to Costing.

Does that mean we have to full cost module configuration?

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