This article explains how the product set feature calculates the Available stock, the Availability and the Maximum purchase quantity of a product set in the storefront.
The logic depends primarily on the Clearance sale setting on the product set itself and on the assigned (sub)products.
Calculation basics
Term | Meaning | Default calculation basis |
Available stock | The maximum quantity that can be ordered in the shop. | The minimum of the available stock of all stock-managed subproducts, divided by the required quantity. |
Availability | Indicates whether the product can be purchased. | Either Available stock > 0 or Always available. |
Maximum purchase quantity | The maximum quantity allowed in the cart. | The lowest value of Available stock, Maximum purchase quantity in the product and Maximum purchase quantity global. |
Clearance sale | The setting that determines whether the product may be sold until stock reaches zero. |
Important: Product sets are always flagged as not stock-managed in the system. However, the shop's availability logic is controlled by the availability of the products they contain.
Product set has clearance sale on
If Clearance sale is enabled on the product set, availability is derived directly from the stock of the assigned products.
Assigned products | Available stock | Availability | Maximum purchase quantity |
All not stock-managed |
| Available stock > 0 | MIN(Available stock; Maximum purchase quantity in the product; Maximum purchase quantity global). Additional cart validation. |
Only some not stock-managed | MIN (Available stock / Quantity of the stock-managed subproducts) | Available stock > 0 | MIN(Available stock; Maximum purchase quantity in the product; Maximum purchase quantity global). Additional cart validation. |
All stock-managed | MIN (Available stock / Quantity of the assigned products) | Available stock > 0 | MIN(Available stock; Maximum purchase quantity in the product; Maximum purchase quantity global). Additional cart validation. |
All have clearance sale on | Calculation follows the default behavior. | Available stock > 0 | MIN(Available stock; Maximum purchase quantity in the product; Maximum purchase quantity global). Additional cart validation. |
Product set has clearance sale off
If Clearance sale is disabled on the product set, the product set is shown in the frontend as always available, regardless of the current available stock of the subproducts.
Assigned products | Available stock | Availability | Maximum purchase quantity |
All not stock-managed |
| Always available | MIN(Maximum purchase quantity in the product; Maximum purchase quantity global). |
Only some not stock-managed | MIN (Available stock / Quantity of the stock-managed subproducts) | Always available | Maximum purchase quantity in the product or Maximum purchase quantity global. |
All stock-managed | MIN (Available stock / Quantity of the assigned products) | Always available | Maximum purchase quantity in the product or Maximum purchase quantity global. |
All have clearance sale on | See scenario 1, row 4. The clearance sale setting of the product set becomes irrelevant. | Available stock > 0 | MIN(Available stock; Maximum purchase quantity in the product; Maximum purchase quantity global). Additional cart validation. |
Notes on cart validation
In all cases where Clearance sale is enabled on the product set or on the assigned products, the system performs an additional validation in the cart.
This ensures that the available stock of the assigned products with clearance sale enabled is sufficient even if the same subproduct is included multiple times in different product sets or as a single item in the cart.
Cart message: "… no longer available in this cart constellation …"
For a product set, the cart can show the message Das Produkt ist in dieser Warenkorbkonstellation nicht mehr verfügbar. Es kann nur 0 mal … bestellt werden. It comes from the check in the cart: The shop displayed the product set as available, but an assigned product is not available in a sufficient quantity.
To make a product set appear as unavailable in the shop as soon as a component is missing, enable clearance sale on the main product of the product set.
Note: If an assigned product is inactive but still has stock, it does not make the product set unavailable.