> For the complete documentation index, see [llms.txt](https://developer.rategain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.rategain.com/ultradirect/ultradirect-transaction-sets-xml/booking-transactions/request-message-format-cancel.md). # Request message format - Cancel

Element Path	Attribute	Occ	Type	Notes
HotelML/Head/Process		1
	DataPath	1	Char	Set to "/HotelML/Form/CancelReservation”
	Function	1	Char	Set to “TI_CancelReservationV1_1”
	Token	1	Char	Unique ID for the transaction generated by the system sending the transaction.
HotelML/Head/Route		1
	Source	1	Char 2-3	Identifies the organization sending the transaction. The value to use will be provided during the implementation project.
	Destination	1	Char 2	Always set to “00” (i.e. zero zero).
HotelML/Form/CancelReservation
	Confirmation Number	1	Char 6-80	CRS confirmation number
	InDate	1	Date	Arrival date
	OutDate	1	Date	Departure date
	PropertyCode	1	Char 10	Chain and property code – e.g. “UI;12345”
	Session	0..1	Enum	Set to “New” if using active session control (i.e. booking will not be confirmed until committed using the SessionControl message). Otherwise omit the attribute.
HotelML/Form/CancelReservation/Locale		0..1		This is used to request the response in a specific language. Note: It can only be included if requesting a language other than English.
	Language	1	Char 2	Language code – e.g. “FR”
	Country	0..1	Char	Optional country name – e.g. “France”.
HotelML/Form/ CancelReservation /Reservation/Guest		1		Name of primary guest

Element Path

Attribute

Occ

Type

Notes

HotelML/Head/Process

DataPath

Char

Set to "/HotelML/Form/CancelReservation”

Function

Char

Set to “TI_CancelReservationV1_1”

Token

Char

Unique ID for the transaction generated by the system sending the transaction.

HotelML/Head/Route

Source

Char 2-3

Identifies the organization sending the transaction. The value to use will be provided during the implementation project.

Destination

Char 2

Always set to “00” (i.e. zero zero).

HotelML/Form/CancelReservation

Confirmation Number

Char 6-80

CRS confirmation number

InDate

Date

Arrival date

OutDate

Date

Departure date

PropertyCode

Char 10

Chain and property code – e.g. “UI;12345”

Session

0..1

Enum

Set to “New” if using active session control (i.e. booking will not be confirmed until committed using the SessionControl message). Otherwise omit the attribute.

HotelML/Form/CancelReservation/Locale

0..1

This is used to request the response in a specific language.

Note: It can only be included if requesting a language other than English.

Language

Char 2

Language code – e.g. “FR”

Country

0..1

Char

Optional country name – e.g. “France”.

HotelML/Form/ CancelReservation /Reservation/Guest

Name of primary guest


	FirstName	1	Char 99	Guest’s first name or initials. Total length of FirsName + LastName cannot exceed 99 characters
	LastName	1	Char 99	Guest’s last name

FirstName

Char 99

Guest’s first name or initials. Total length of FirsName + LastName cannot exceed 99 characters

LastName

Char 99

Guest’s last name

--- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://developer.rategain.com/ultradirect/ultradirect-transaction-sets-xml/booking-transactions/request-message-format-cancel.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.