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# Supply orders | call-off

In the [supply orders](https://support.robaws.com/en/article/supply-orders-general-explanation-1gxeocy/) module you can place a [purchase supply order](https://support.robaws.com/en/article/supply-orders-purchase-supply-order-uadj1d/) with a supplier and then have it delivered in parts **on call-off**.
A call-off order works in much the same way as progress claims on a project, but its purpose is to have a part of the supply order delivered each time.

## Creating one

A call-off order can be created in 3 ways:
* supply orders module > add a new supply order, choose call-off. Choose which supply order this call-off is based on.
* from a supply order > go to overview > click + call-off orders.
* from a call-off order > go to overview > click + call-off orders. The next call-off order is created on the basis of the last call-off order.

||| If the acceptance flow has been activated, the supply order first has to be approved before a call-off order can be created.

## Properties

* the call-off order receives the same number as the main supply order (with a sequence number)
* the main supply order is filled in on the call-off order
* the item lines contain the following columns: 'predicted' (quantity from the main supply order), 'previous' (quantity that has already been ordered on previous call-off orders), 'quantity' (quantity that is now requested on this call-off order). Only the field 'quantity' can be adjusted freely.

## Stock change

When a call-off order is received, the stock change is visible on the main supply order.

## Recalculation

In the project [recalculation ](https://support.robaws.com/en/article/project-recalculation-1sitd2t/)only the main supply order is taken into account, not the call-off orders.