--- title: Trip.com modification cases description: Learn about Trip.com modification cases for both V3 and V4 version --- [Skip to content](https://help.hotellinksolutions.com/trip.com-modification-cases#main-content) English Show submenu for translations [Suggest a New Article](https://help.hotellinksolutions.com/kb-tickets/new?hsLang=en) [Customer portal](https://help.hotellinksolutions.com/tickets-view?hsLang=en) [![white-logo-v2](https://help.hotellinksolutions.com/hs-fs/hubfs/white-logo-v2.png?width=170&height=49&name=white-logo-v2.png)](https://help.hotellinksolutions.com/?hsLang=en) Open main navigation Close main navigation - English Show submenu for translations - [Suggest a New Article](https://help.hotellinksolutions.com/kb-tickets/new) - [Customer portal](https://help.hotellinksolutions.com/tickets-view) Welcome to the Hotel Link help centre - There are no suggestions because the search field is empty. 1. [Help Center](https://help.hotellinksolutions.com/?hsLang=en) 2. 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[Trip.com](https://help.hotellinksolutions.com/channel-manager?hsLang=en#trip-com) # Trip.com modification cases ## This article explains how Trip.com booking modifications are handled depending on the connection version (V3 or V4), and which types of changes are supported via API or must be handled offline. ### Modification handling by connection version | Modification Case | **V3 Connection** | **V4 Connection** | | --- | --- | --- | | Apply direct modifications via API | ❌ Not supported | ✅ Supported | | Guest names | Trip.com send these modification requests through offline confirmation method to the hotel. | API | | Contact information | | | | Special requests | | | | Stay dates | | | | Change number of rooms booked | Trip.com send these modification requests through offline confirmation method to the hotel. | | | Change room type | Trip.com will cancel the original booking and then create a new one. | | | Change booked product | | |         - [Channel Manager](https://help.hotellinksolutions.com/channel-manager?hsLang=en#main-content) - 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