# Assembly Orders

Calculations on Assembly Orders are similar to production orders in that Expected and Actual cost calculations are available:

- Expected cost calculations consider the Assembly BOM
- Actual cost calculations consider all posted values for an Assembly Order

The difference to production orders, however, is that calculations are performed at the order level, not the line level.

If no calculation is available for the Assembly Order, no calculations are displayed in the **Calculations** page. Choose the **New** action to create a new calculation and then choose the Enter key to assign a number. It is possible to create more than one calculation for one Assembly Order.

If the **Standard Calc. Schedule No.** field on the item used in the Assembly Order is filled in, the standard calculation schedule is used for the new calculation. Otherwise the **Calculation Schedules** page opens for you to select a calculation schedule manually.

The values of the Assembly Order are transferred to the calculation header; note that the **Replenishment System** field is set to *Assembly* because the item has an Assembly BOM. The link between the Assembly Order and the calculation is shown on the **Document** FastTab in the Calculation Card.

## Calculation Groups in Assembly BOM

Item and capacity calculation groups are transferred from the item and resource via the Assembly BOM lines to the Assembly Order lines.

Since Assembly Order calculations use the calculation groups from the Assembly BOM – not directly from the item and resource – the calculation groups can be changed on the Assembly Order lines.

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