Read BOM and production costs

Use BOM cost information to review component price inputs and sourcing choices. Then compare the production order's actual quantities with inventory and cost records before using the result for financial reporting.

The BOM display is an estimate based on the data available to that view. A recipe estimate, a supplier price, a completed production quantity and an inventory valuation answer different questions.

Inspect a BOM's cost information

1. Open the output material in Materials, then select BOM.
2. Select the intended usage type and version. Confirm whether it is a draft, active or inactive version.
3. Review Rolled-up Cost in the summary and switch from Structure to Cost for the cost view.
4. Inspect the displayed components and their supplier or BOM selections. Expand assemblies where needed to see which inputs are visible.
5. If you try alternative selections, watch for Scenario. This indicates unsaved choices. Review the combination before using Save or Save as new version.

Rolled-up Cost reflects sourced-material price information and quantities in the displayed tree. Do not assume the figure is a fully calculated cost per finished unit or the total cost of a planned run. Review base output, nested assemblies and the contributing price inputs first. In particular, an assembly and its sub-components can both contribute visible costs, and nested quantities need separate checking against the actual recipe.

For a simple base-one recipe, you can independently reconcile a useful estimate. Suppose a Gift box uses a kraft box priced at USD 1.00 each, two tissue sheets priced at USD 0.10 per sheet, and one metre of ribbon priced at USD 0.30 per metre. Those inputs total USD 1.50 per Gift box, or USD 15.00 for 10, before scrap, labour, overhead or other charges. These are illustrative prices; use the prices and units on your own records.

Review supplier prices and missing data

A component's price needs both an amount and a currency, in the correct unit. A price of USD 24 per case of 24 is different from USD 24 per each. Resolve supplier-unit conversions before comparing costs; see supplier products and prices.

When a component needs a supplier link, open Component Detail and choose Add supplier. Select the existing Supplier, review Supplier SKU, and enter Currency and Unit Cost if pricing is known. Choose Preferred supplier only when appropriate, then select Add Supplier. Adding this relationship does not create a purchase order or notify the supplier.

Maintain existing supplier prices through the supplier's details. Do not assume changing a supplier selection in a BOM also changes its price, effective dates or quantity tiers. The BOM estimate is not a quotation for the production run's purchase volume.

No cost data means the view has no usable price data for a total. It does not mean the material is free. Even when a number is displayed, inspect unpriced components before treating it as complete.

Understand mixed currencies

When contributing costs use more than one currency, the summary shows Withheld and Mixed currencies. Zapstra Inventory Management does not silently convert and add those amounts in this BOM total.

For example, a USD-priced kraft box and EUR-priced ribbon cannot be added into a meaningful USD total without an explicit conversion basis. Keep their currency context, review the supplier records, and use an appropriate accounting calculation for a converted comparison. Do not relabel an EUR amount as USD just to make a total appear.

Read additional cost information carefully

The Cost view can show a Cost Overlay, listing a description, cost type, currency and amount per unit. If none is present, it says No overhead items defined for this BOM. This section displays existing information; the BOM screen does not provide a general overhead-entry workflow.

Do not assume an overlay amount is included in Rolled-up Cost, or that the Cost relevant component field alone proves how much the summary includes. Review additional costs separately. Labour, machine time, freight, duties and accounting allocations need an explicit basis before being included in a final production cost.

Compare estimates with completed work

After production, open the order and compare Planned qty, Actual qty, Excess, output and any scrap. Actual consumption can differ from the BOM estimate. A higher output quantity does not prove that all component costs scaled proportionally, and a successful completion does not establish a fully reconciled financial total.

Use cost layers and the inventory ledger to inspect available valuation and provenance records, and inventory activity to investigate the movements. Reconcile source prices, currencies, actual quantities and additional charges before using the result as final accounting.

If production is corrected or reversed, review its subsequent inventory and cost records before reusing an earlier report. A quantity correction does not update the supplier's price or rewrite the recipe estimate. For an unavailable total or a discrepancy, preserve the material, BOM version and production references and contact Support.