# Availability for Active Data

Availability is the normalized ratio between the Allocation attribute and the Available To Sell (ATS) attribute of a product inventory record. Special rules apply for variation products, product sets, and potentially product bundles. Availability is the same for all sites that share an Inventory list, so it's basically a site-specific value.

Availability:

• Is not staged and values are specific to each instance
• Is a ratio value from 0.0 through 1.0
• Is computed in real time in Salesforce B2C Commerce

## Standard Product

Example: Standard Product and Bundled Products Within an Inventory List

Allocation(p: 50)

ATS(p: 10)

Availability(p: 10 / 50 = 0.20)

## Base Product and Variations

If the number of online variations is zero, then the availability of the base product is zero.

Otherwise, the availability of a base product is equal to the sum of the availability of each variation product divided by the total number of variation products. Availability is calculated using the following formula:

```Availability(mp) = SUM(Availability(vpX)) / X) ```

Where:

mp is a base product

vpX are online variantion products of the base product

X is the number of online variation products

Example: Base Product Within an Inventory List

Variation product 1

Allocation: 50

ATS: 10

Availability: 0.20

Variation product 2

Allocation: 100

ATS: 10

Availability: 0.10

Base Product

Availability: (0.20 + 0.10) / 2 = 0.15

## Product Bundle

A product bundle’s availability is the availability of its least available product, because products in a bundle can't be purchased separately. Availability is calculated using the following formula:

```Availability(bp) = MIN(Availability(cpX))```

## Product Set

A product set’s availability is the availability of its most available product, because products are purchased individually, but are promoted through a set. So customers can purchase any item in a set that’s still available. Availability is calculated using the following formula:

```Availability(sp) = MAX(Availability(cpX))```

Where

sp is a product set

cpX are online products in the set

Example: Product Set Within an Inventory List

Product 1 in set

Allocation: 50

ATS: 10

Availability: 0.20

Product 2 in set

Allocation: 100

ATS: 10

Availability: 0.10

Product set

Availability: MAX(0.20, 0.10) = 0.20

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