# Convert every opportunity: bridge availability gaps with alternatives
In our fast-moving industry, inventory gaps and sold-out dates are inevitable, but losing a customer isn't.
Integrate the [Alternative recommendation endpoints](/basics/openapi/recommendations-api/get-alternative-recommendations.md) and, if a preferred option is unavailable, instantly pivot to high-quality relevant alternatives that keep your users engaged and your conversion rates protected.
We have leveraged dozens of millions of booking data points to build a dedicated Recommendations Engine within the Partner API. Instead of relying on static popularity lists or manual curation, you can now dynamically surface the most relevant products *to your users*.
{% hint style="info" %}
We are manually enabling this feature for partners on a case-by-case basis. Reach out to get started.
{% endhint %}
***
### Best use cases for commercial impact
To maximise the revenue generated by these endpoints, we recommend the following integrations:
#### 1. The "sold out" safety net
**Where it fits**
A user is on a Product Detail Page, checking availability, but the specific date or timeslot they want is sold out.
**What to do**
If your availability check returns 0 for a specific date, immediately trigger the Alternative endpoint and display a recommendation to your customer.
**Example**
* The customer is checking a **Vatican Museums Guided Tour**.
* They click on a date that doesn't have any availability.
* You display the **alternative** Vatican Museums Combo Ticket, with a clear messaging.
{% hint style="info" %}
Tip
Display these results with a header like "Tickets for your date are sold out, but travellers also loved these..." to keep the user engaged.
{% endhint %}
#### 2. The "disabled" redirect
**Where it fits**
A product's checkout is being temporarily disabled (seasonality, technical issue, etc.)
**What to do**
[Subscribe to Product Change Notifications](/integration-guides/webhooks/stay-up-to-date-proactively-with-product-change-notifications.md) to be updated, and when a product is temporarily disabled call the Alternative endpoint to display recommendations.
**Example**
* The customer lands on *Summer Jetboat*, a seasonal product **currently disabled**.
* You show *Winter Jetboat*, a **similar but available product** near the "Closed" information.
#### 3. The "archived" replacement
**Where it fits**
A product is being disabled for good.
**What to do**
[Subscribe to Product Change Notifications](/integration-guides/webhooks/stay-up-to-date-proactively-with-product-change-notifications.md) to be updated, and when a product is being archived call the Alternative endpoint to find the best substitute, and replace your connection with a new product.
**Example**
* You were listing **Colosseum Early Bird Tour** in your venue page.
* This supplier **stops offering** this product.
* You replace it by **Colosseum Small Group Guided Tour** in your page.
***
### Technical Implementation for alternative recommendations
Use this endpoint to fetch products that serve as a substitute for the current product context.
```http
GET /v2/products/{productId}/recommendations/alternative
```
**Example Request**
*A user is looking at the Colosseum Guided Tour (ID 16034) but availability is tight. You want to show high-conversion alternatives.*
```http
GET /v2/products/16034/recommendations/alternative?sort_by=conversion_rate¤cy=EUR
```
**Example Response**
```json
{
"recommendations": [
{
"product_id": 16056,
"title": "Colosseum VIP Entrance",
"image_url": "https://images.tiqets.com/...",
"from_price": {
"amount": "54.00",
"currency": "EUR"
}
},
{
"product_id": 13012,
"title": "Colosseum Entry Ticket + Audio Guide",
"image_url": "https://images.tiqets.com/...",
"from_price": {
"amount": "42.00",
"currency": "EUR"
}
}
]
}
```
---
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