# 2026

URL: https://docs.emergingtravel.com/docs/changelog/2026/

---

> [!NOTE]
> The complete changelog for 2026 is available on this page.



# June

## June 8

*(tags: b2b, affiliate)*

### Updated { #june-8-updated }

The description `guests` field in the calls:
* Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#guests), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#guests)).
* Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#guests), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#guests)).
* Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#guests), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#guests)).
* Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#guests), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#guests)).
* Retrieve rate info ([B2B](/docs/b2b-api/hotel-search/retrieve-rate-info/#guests), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-rate-info/#guests)).

## June 7

*(tags: b2b, affiliate)*

### Updated { #june-7-updated }

* The description `hotels` field in the **Suggest hotel and region** ([B2B](/docs/b2b-api/hotel-search/suggest-hotel-and-region/#hotels), [Affiliate](/docs/affiliate-api/hotel-search/suggest-hotel-and-region/#hotels)) call.
* The description `type` field in the **Suggest hotel and region** ([B2B](/docs/b2b-api/hotel-search/suggest-hotel-and-region/#type), [Affiliate](/docs/affiliate-api/hotel-search/suggest-hotel-and-region/#type)) call.

## June 1

*(tags: fundamentals)*

### Updated { #june-1-updated }

* The description of section **2. Hotel Static** section in the [Best Practices](/docs/best-practices-for-apiv3/#2-hotel-static).
* The descriptions in section 1 of the [Integration Guide](/docs/integration-guide/#1-static-data-step).
* The warning box in the [Content API](/docs/content-api/) section.

# May

## May 23

*(tags: fundamentals)*

### Updated { #may-23-updated }

The description **Multiroom booking** section in the [Best Practices](/docs/best-practices-for-apiv3/#34-multiroom-booking).

## May 19

*(tags: b2b, affiliate)*

### Added { #may-19-added }

The description `hotels_limit` field in the **Search by geo coordinates** ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#hotels_limit), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#hotels_limit)) call.

## May 18

*(tags: fundamentals)*

### Updated { #may-18-updated }

Examples in the [Upsells](/docs/how-tos/process-fields/upsells/) section.

## May 10

*(tags: b2b, affiliate)*

### Added { #may-10-added }

* The description `size` field in the calls:
  * Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#size), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#size)).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#size).
* The description `distance_center` field in the calls:
  * Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#distance_center), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#distance_center)).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#distance_center).

## May 8

*(tags: fundamentals)*

### Updated { #may-8-updated }

The descriptions in sections 4 and 5.1 of the [Integration Guide](/docs/integration-guide/).

## May 7

*(tags: b2b, affiliate)*

### Updated { #may-7-updated }

The description **Retrieve hotel content** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/)) call.

## May 6

*(tags: b2b, affiliate)*

### Updated { #may-6-updated }

* The `insufficient_b2b_balance` error in the calls:
  * Create booking process ([B2B](/docs/b2b-api/booking/create-booking-process/#insufficient_b2b_balance), [Affiliate](/docs/affiliate-api/booking/create-booking-process/#insufficient_b2b_balance)).
  * Start booking process ([B2B](/docs/b2b-api/booking/start-booking-process/#insufficient_b2b_balance), [Affiliate](/docs/affiliate-api/booking/start-booking-process/#insufficient_b2b_balance)).
* The description `amenity_translations` field in the **Retrieve hotel static data** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-static-data/#amenity_translations), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-static-data/#amenity_translations)) call.

## May 5

*(tags: b2b, affiliate)*

### Updated { #may-5-updated }

The `invalid_cvc` error in the **Create credic card token** ([B2B](/docs/b2b-api/booking/create-credit-card-token/#invalid_cvc), [Affiliate](/docs/affiliate-api/booking/create-credit-card-token/#invalid_cvc)) call.

# April

## April 27

*(tags: b2b, affiliate)*

### Added { #april-27-added }

Dump file structure in the **Retrieve hotel reviews’ dump** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-reviews-dump/#dump-file-structure), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-reviews-dump/#dump-file-structure)).

### Updated { #april-27-updated }

The description `payment_methods` field in the calls:
* Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#payment_methods), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#payment_methods)).
* [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#payment_methods).

## April 20

*(tags: b2b, affiliate)*

### Added { #april-20-added }

The description `check_in_time_end` field in the calls:
* Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#check_in_time_end), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#check_in_time_end)).
* [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#check_in_time_end).

## April 18

*(tags: b2b, affiliate)*

### Added { #april-18-added }

The description `beds`, `bed`, `count` fields in the calls:

* Prebook rate from hotelpage step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/#beds), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-hotelpage-step/#beds)).
* Prebook rate from search step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/#beds), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/#beds)).
* Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#beds), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#beds)).
* Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#beds), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#beds)).
* Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#beds), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#beds)). 
* Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#beds), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#beds)).

## April 14

*(tags: b2b, affiliate)*

### Updated { #april-14-updated }

The description `socket_types` field in the **Retrieve hotel static data** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-static-data/#socket_types), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-static-data/#socket_types)) call.

## April 7

### Updated { #april-7-updated }

The description `serp_filters` field in the [Retrieve filter values](/docs/content-api/retrieve-filter-values/#serp_filters) call.

## April 5

*(tags: b2b, affiliate)*

### Updated { #april-5-updated }

* The description `order_id` field in the **Retrieve bookings** ([B2B](/docs/b2b-api/post-booking/retrieve-bookings/#order_id), [Affiliate](/docs/affiliate-api/post-booking/retrieve-bookings/#order_id)) call.

# March

## March 31

*(tags: b2b, affiliate)*

### Added { #march-31-added }

Dump file structure, Structure of the region, and Field details to the Retrieve regions’ dump ([B2B](/docs/b2b-api/static-content/retrieve-regions-dump/), [Affiliate](/docs/affiliate-api/static-content/retrieve-regions-dump/)).

### Updated { #march-31-updated }

The description **Retrieve hotel custom dump** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-custom-dump/), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-custom-dump/)) call.

## March 29

*(tags: b2b, affiliate)*

### Updated { #march-29-updated }

* The `fsa_kind` and `fsa_name` fields are marked as cancelled in the following calls:
  * Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#category_type), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#category_type)).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#category_type).
* The `metapolicy_struct` field in the **Retrieve hotel content** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#metapolicy_struct), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#metapolicy_struct)) call.

### Added { #march-29-added }

The `name` field in the **Retrieve hotel static data** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-static-data/#name), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-static-data/#name)) call.

## March 26

*(tags: b2b, affiliate)*

### Updated { #march-26-updated }

* The description `comment` field in the **Start booking process** ([B2B](/docs/b2b-api/booking/start-booking-process/#user-comment), [Affiliate](/docs/affiliate-api/booking/start-booking-process/#user-comment)) call.
* The description in the **Suggest hotel and region** ([B2B](/docs/b2b-api/hotel-search/suggest-hotel-and-region/), [Affiliate](/docs/affiliate-api/hotel-search/suggest-hotel-and-region/)) call.

## March 16

*(tags: b2b, affiliate)*

### Updated { #march-16-updated }

The description `amenity_translations` field in the **Retrieve hotel static data** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-static-data/#amenity_translations), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-static-data/#amenity_translations)) call.

## March 13

*(tags: b2b, affiliate)*

### Updated { #march-13-updated }

* Revised the  [Integration Guide](/docs/integration-guide/) and [Certification and Production access](/docs/certification/) documentation.
* The description `day_period` field in the calls:
  * Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#day_period), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#day_period)).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#day_period). 
* The description `checkin_datetime` and `checkout_datetime` fields in the [Start booking process](/docs/b2b-api/booking/start-booking-process/#attributes) call.
* The description `check_in_time`, `check_out_time` and `time` fields in the calls:
  * Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#check_in_time), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#check_out_time)).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#time). 
* The description `arrival_datetime` field in the Start booking process ([B2B](/docs/b2b-api/booking/start-booking-process/#arrival_datetime), [Affiliate](/docs/affiliate-api/booking/start-booking-process/#arrival_datetime)).
* The description `from_time`field in the calls:
  * Prebook rate from hotelpage step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/#from_time), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-hotelpage-step/#from_time)).
  * Prebook rate from search step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/#from_time), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/#from_time)).
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#from_time), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#from_time)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#from_time), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#from_time)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#from_time), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#from_time)).
  * Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#from_time), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#from_time)).
  * Retrieve rate info ([B2B](/docs/b2b-api/hotel-search/retrieve-rate-info/#from_time), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-rate-info/#from_time)).
* The description `time` fields in the calls:
  * [Search by hotel IDs](/docs/b2b-api/hotel-search/search-by-hotel-ids/#early_checkin).
  * [Search by geo coordinates](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#late_checkout).
  * [Search by region](/docs/b2b-api/hotel-search/search-by-region/#time).
  * [Retrieve hotelpage](/docs/b2b-api/hotel-search/retrieve-hotelpage/#early_checkin).

## March 12

*(tags: b2b, affiliate)*

### Updated { #march-12-updated }

* The description **Receive booking status webhook** ([B2B](/docs/b2b-api/booking/receive-booking-status-webhook/#your-server-responses), [Affiliate](/docs/affiliate-api/booking/receive-booking-status-webhook/#your-server-responses)) call.
* The description `by` and `type` fields:
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#by), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#by)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#by), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#by)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#by), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#by)).
  * Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#by), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#by)).
  * Prebook rate from hotelpage step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/#by), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-hotelpage-step/#by)).
  * Prebook rate from search step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/#by), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/#by)).
  * Retrieve rate info ([B2B](/docs/b2b-api/hotel-search/retrieve-rate-info/#by), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-rate-info/#by)).
  * Start booking process ([B2B](/docs/b2b-api/booking/start-booking-process/#type), [Affiliate](/docs/affiliate-api/booking/start-booking-process/#type)).
  * Create booking process ([B2B](/docs/b2b-api/booking/create-booking-process/#type), [Affiliate](/docs/affiliate-api/booking/create-booking-process/#type)).
  * Retrieve rate info ([B2B](/docs/b2b-api/booking/start-booking-process/#type), [Affiliate](/docs/affiliate-api/booking/start-booking-process/#type)).
* The `serp_filters` field are marked as deprecated in the calls: 
  * Prebook rate from hotelpage step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/#serp_filters), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-hotelpage-step/#serp_filters)).
  * Prebook rate from search step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/#serp_filters), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/#serp_filters)).
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#serp_filters), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#serp_filters)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#serp_filters), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#serp_filters)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#serp_filters), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#serp_filters)).
  * Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#serp_filters), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#serp_filters)). 
  * Retrieve rate info ([B2B](/docs/b2b-api/hotel-search/retrieve-rate-info/#serp_filters), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-rate-info/#serp_filters)).

## March 6 

*(tags: b2b, affiliate)*

### Added { #march-4-added }

The `filter` field in the calls:
* Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#filter), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#filter)).
* Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#filter), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#filter)).
* Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#filter), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#filter)).
* Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#filter), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#filter)).

### Updated { #march-6-updated }

* The Request examples and Response examples in th e calls:
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/)).
  * Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/)). 

* Dump download links are now temporary (valid for 1 hour only). The API must be called each time a new link is required:
  * Retrieve hotel dump ([B2B](/docs/b2b-api/static-content/retrieve-hotel-dump/#response-example), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-dump/#response-example)).
  * Retrieve hotel custom dump ([B2B](/docs/b2b-api/static-content/retrieve-hotel-custom-dump/#response-example), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-custom-dump/#response-example)).
  * Retrieve hotel incremental dump ([B2B](/docs/b2b-api/static-content/retrieve-hotel-incremental-dump/#response-example), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-incremental-dump/#response-example)).
  * Retrieve point of interest dump ([B2B](/docs/b2b-api/static-content/retrieve-point-of-interest-dump/#response-example), [Affiliate](/docs/affiliate-api/static-content/retrieve-point-of-interest-dump/#response-example)).
  * Retrieve hotel reviews’ dump ([B2B](/docs/b2b-api/static-content/retrieve-hotel-reviews-dump/#response-example), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-reviews-dump/#response-example)).
  * Retrieve regions’ dump ([B2B](/docs/b2b-api/static-content/retrieve-regions-dump/#response-example), [Affiliate](/docs/affiliate-api/static-content/retrieve-regions-dump/#response-example)).
  * Retrieve hotel reviews’ incremental dump ([B2B](/docs/b2b-api/static-content/retrieve-incremental-hotel-reviews-dump/#response-example), [Affiliate](/docs/affiliate-api/static-content/retrieve-incremental-hotel-reviews-dump/#response-example)).

## March 5

*(tags: b2b, affiliate)*

### Updated { #march-5-updated }

The **Retrieve hotel custom dump** ([B2B](/docs/b2b-api/static-content/retrieve-hotel-custom-dump/), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-custom-dump/)) method:
* Request example, request body description, and field descriptions for `url` ([B2B](/docs/b2b-api/static-content/retrieve-hotel-custom-dump/#url), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-custom-dump/#url)) and `last_update` ([B2B](/docs/b2b-api/static-content/retrieve-hotel-custom-dump/#last_update), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-custom-dump/#last_update)).

## March 2

*(tags: b2b, affiliate)*

### Updated { #march-2-updated }

* The description **Prebook rate from search step** ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/)) call.
* The `search_hash` field in the calls:
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#search_hash), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#search_hash)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#search_hash), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#search_hash)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#search_hash), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#search_hash)).

# February

## February 25

*(tags: b2b, affiliate)*

### Updated { #february-25-updated }

The description **Prebook rate from search step** ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/)) call.

## February 24

*(tags: fundamentals)*

### Updated { #february-24-updated }

The section [Responses](/docs/fundamentals/responses/) description.

## February 4

### Added { #february-24-added }

*(tags: b2b, affiliate)*

* Error Handling diagrams in the calls:
  * Create booking process ([B2B](/docs/b2b-api/booking/create-booking-process/#error-handling-diagram), [Affiliate](/docs/affiliate-api/booking/create-booking-process/#error-handling-diagram)).
  * Check booking process ([B2B](/docs/b2b-api/booking/check-booking-process/#error-handling-diagram), [Affiliate](/docs/affiliate-api/booking/check-booking-process/#error-handling-diagram)).
  * Start booking process ([B2B](/docs/b2b-api/booking/start-booking-process/#error-handling-diagram), [Affiliate](/docs/affiliate-api/booking/start-booking-process/#error-handling-diagram)).
* Error Handling diagrams in the <b>Integration guide</b> to [API Integration and Certification Guidelines](/docs/integration-guide/#42-start-booking-process).

# January

## January 30

### Updated { #january-30-updated }

* The description calls:
  * [Retrieve filter values](/docs/content-api/retrieve-filter-values/).
  * [Retrieve hotel IDs by filter](/docs/content-api/retrieve-hotel-ids-by-filter/).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/).
  * [Retrieve hotels review by IDs](/docs/content-api/retrieve-hotels-review-by-ids/).

## January 29

### Updated { #january-29-updated }

* Responses examples in the calls:
  * [Retrieve filter values](/docs/content-api/retrieve-filter-values/#response-example).
  * [Retrieve hotel IDs by filter](/docs/content-api/retrieve-hotel-ids-by-filter/#response-example).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#response-example).
  * [Retrieve hotels review by IDs](/docs/content-api/retrieve-hotels-review-by-ids/#response-example).

## January 28

### Updated { #january-28-updated }

*(tags: b2b, affiliate)*

The `images` field are marked as deprecated in the calls:
* Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#images), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#images)).
* [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#images).

## January 26

### Added { #january-26-added }

* New [Sandbox](/docs/fundamentals/sandbox/) section.
* New [Certification and Production access](/docs/certification/) section.
* Sandbox-specific information to calls ([B2B](/docs/b2b-api/), [Affiliate](/docs/affiliate-api/)).

### Updated { #january-26-updated }

*(tags: b2b, affiliate)*

* The `id` and `ids` fields are marked as deprecated in the calls:
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#id), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#id)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#id), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#id)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#id), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#id)).
  * Suggest hotel and region ([B2B](/docs/b2b-api/hotel-search/suggest-hotel-and-region/#id), [Affiliate](/docs/affiliate-api/hotel-search/suggest-hotel-and-region/#id)).
  * Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#id), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#id)).
  * Prebook rate from hotelpage step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/#id), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-hotelpage-step/#id)).
  * Prebook rate from search step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/#id), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/#id)).
  * Retrieve rate info ([B2B](/docs/b2b-api/hotel-search/retrieve-rate-info/#id), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-rate-info/#id)). 
  * Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#id), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#id)).
  * Retrieve bookings ([B2B](/docs/b2b-api/post-booking/retrieve-bookings/#id), [Affiliate](/docs/affiliate-api/post-booking/retrieve-bookings/#id)).
* [Test environment](/docs/best-practices-for-apiv3/#15-test-environment) section in the [Best Practices](/docs/best-practices-for-apiv3/).

## January 21

### Updated { #january-21-updated }

*(tags: b2b, affiliate)*

* The `incorrect_chosen_payment_type` error in the **Start booking process** ([B2B](/docs/b2b-api/booking/start-booking-process/#incorrect_chosen_payment_type), [Affiliate](/docs/affiliate-api/booking/start-booking-process/#incorrect_chosen_payment_type)) call.
* The `amount` and `included` fields description in the calls:
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#vat_data)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#vat_data)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#vat_data)).
  * Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#vat_data)).
  * Prebook rate from hotelpage step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/#vat_data)).
  * Prebook rate from search step ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/#vat_data)).
  * Retrieve rate info ([B2B](/docs/b2b-api/hotel-search/retrieve-rate-info/#vat_data)). 
* The request example in the [Retrieve hotel IDs by filter](/docs/content-api/retrieve-hotel-ids-by-filter/#request-example).
* The `order_type` and `type` fields description in the **Retrieve bookings** call ([B2B](/docs/b2b-api/post-booking/retrieve-bookings/#upsells), [Affiliate](/docs/affiliate-api/post-booking/retrieve-bookings/#upsells)).

## January 20

### Updated { #january-20-updated }

*(tags: b2b, affiliate)*

* The `fsa_kind` and `fsa_name` fields are marked as deprecated in the following calls:
  * Retrieve hotel content ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#category_type), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#category_type)).
  * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#category_type).
* Descriptions for **Prebook rate from hotelpage step** ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-hotelpage-step/)) and **Prebook rate from search step** ([B2B](/docs/b2b-api/hotel-search/prebook-rate-from-search-step/), [Affiliate](/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/)) calls.
* Prebook section in the [API Integration and Certification Guidelines](/docs/integration-guide/#3-prebook).
* The `guests` field description in the calls: 
  * Search by hotel IDs ([B2B](/docs/b2b-api/hotel-search/search-by-hotel-ids/#guests), [Affiliate](/docs/affiliate-api/hotel-search/search-by-hotel-ids/#guests)).
  * Search by geo coordinates ([B2B](/docs/b2b-api/hotel-search/search-by-geo-coordinates/#guests), [Affiliate](/docs/affiliate-api/hotel-search/search-by-geo-coordinates/#guests)).
  * Search by region ([B2B](/docs/b2b-api/hotel-search/search-by-region/#guests), [Affiliate](/docs/affiliate-api/hotel-search/search-by-region/#guests)).
  * Retrieve hotelpage ([B2B](/docs/b2b-api/hotel-search/retrieve-hotelpage/#guests), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-hotelpage/#guests)).
  * Retrieve rate info ([B2B](/docs/b2b-api/hotel-search/retrieve-rate-info/#guests), [Affiliate](/docs/affiliate-api/hotel-search/retrieve-rate-info/#guests)).

### Added { #january-20-updated }

*(tags: b2b, affiliate)*

* The `kind` and `name` fields in the calls:
    * Retrieve hotel content  ([B2B](/docs/b2b-api/static-content/retrieve-hotel-content/#register), [Affiliate](/docs/affiliate-api/static-content/retrieve-hotel-content/#register)).
    * [Retrieve hotels content by IDs](/docs/content-api/retrieve-hotels-content-by-ids/#register).




