Total Manufacturing, or full costs, are used when top leaders fear that managers will substitute variable costs for full costs, which will then lead to deep price cutting.

your total COGS for the period plus your ending inventory balance of finish and half finished goods less the beginning balance should equal your periods manufacturing costs,

The total manufacturing costs for the period

If the estimated materials, labor or overhead costs allocated for a manufacturing order is different from the actual cost of the MO then the potential result is a Manufacturing Overhead Variance.