# How to use the fulfillment auto switch for bol
### What is the fulfillment auto switch?
This feature is applicable to everyone who wants to sell products using both their own fulfillment (FBR) and fulfillment by Bol.com (FBB). The fulfillment auto switch makes sure that the correct fulfillment type is set, based on the availability of the FBB stock at Bol.com and your own stock. By using this feature, you no longer have to manually keep track of and adjust fulfillment types if the FBB stock reaches 0.
{% hint style="info" %}
This feature does not change any stock levels. It only changes fulfillment types based on the availability of stock.
{% endhint %}
The step-by-step process is as follows:
{% stepper %}
{% step %}
### Request FBB stock
In the background, we request the FBB stock from Bol.com.
{% endstep %}
{% step %}
### Determine fulfillment type each API run
Every time the API runs, we determine which fulfillment type is applicable:
* If the FBB stock is greater than 0, we set the fulfillment type to FBB.
* If the FBB stock is 0 and you have own stock available, we set the fulfillment type to FBR.
* If the FBB stock is 0 and you don't have own stock available, we set the fulfillment type to FBB.
{% endstep %}
{% step %}
### Check fulfillment updates
Via "API > Results > Fulfillment updates" you can check which fulfillment type updates we sent to Bol.com.
{% endstep %}
{% endstepper %}
{% hint style="info" %}
If we don't yet know the FBB stock (for example due to a technical issue), we determine the fulfillment type based on your own stock:
* If there is own stock availability, we set it to FBR.
* If there is no own stock available, we set it to FBB.
This behavior helps prevent products from going offline where possible.
{% endhint %}
***
### Setting up the fulfillment auto-switch
{% hint style="warning" %}
There needs to be a valid "delivery code" filled in for all products that the auto switch feature is active for. If there is no valid delivery code we cannot update the product, which will result in an error for the product and cause it to be unsuccessful.
{% endhint %}
The fulfillment auto switch can be set up in the build step, using the fulfillment field. Aside from the options FBB and FBR, there is also the possibility to use the option `AUTO_SWITCH`. You can either activate the feature for all products in the API or apply it to a selection of products:
{% stepper %}
{% step %}
### Apply to all products in the API
Select the static value `AUTO_SWITCH` for the fulfillment option in the build step.
{% endstep %}
{% step %}
### Apply to a selection of products
Use a dynamic field in which you enter the value `AUTO_SWITCH` for the products you want to activate the feature for. A full explanation of how to set this up can be found in [this article](/list-advertise/bol/list-items-on-bol/how-to-configure-fbb-lvb-and-fbr-for-bol.md).
{% endstep %}
{% endstepper %}
***
### Pay attention to the following points
* **We only update fulfillment types when the API runs.**\
This is done daily following the schedule in the project settings. If you need more regular updates (up to once per hour), consider using the Core Pro plan — see [this article](/get-started/getting-started/create-a-new-project/edit-your-project-schedule-settings.md) for more information.
* **Order of rules.**\
If you use a dynamic field to set up the auto switch, be aware of the order of the rules. For example, if you have rules that rely on the dynamic field containing the value FBB or FBR, those rules might not work properly if you overwrite that value to `AUTO_SWITCH` in an earlier rule. See the demo linked above for an example.
* **To set up the product to FBR, we need to send a delivery code to Bol.com.**\
Make sure all products for which you have activated the auto switch contain a valid delivery code.
* **Bol.com only allows products with the condition "new" to be sold via FBB.**\
If you apply `AUTO_SWITCH` to products with values other than `new`, the switch to FBB will not be applied to those offers.
* **To announce a replenishment delivery to Bol.com the relevant products need to be on FBB.**\
If you start using the auto switch feature, you have to temporarily change the fulfillment type to FBB. This can be done manually in your Bol.com account or via a rule in Channable, whichever fits your workflow best.
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