# Modify Booking ## Modify Booking > The Modify Booking endpoint is used when a customer wants to make changes to their existing policy. This endpoint allows you to update policy details which may result in price adjustments, refunds, or additional fees. The modification is applied directly. ```json {"openapi":"3.0.0","info":{"title":"Offers API","version":"1.0.0"},"servers":[{"url":"https://api.xcover.com/x"}],"security":[{"CustomAPISignature":[]}],"components":{"securitySchemes":{"CustomAPISignature":{"type":"apiKey","name":"Authorization","in":"header","description":"**Composite Authentication Scheme (Client Key, Date, and Signature)**\n\nThis scheme requires the client to provide **three** mandatory headers in every request:\n\n### 1. X-Api-Key (Client Key)\n* **Purpose:** Public identifier for the API consumer.\n* **Example:** `X-Api-Key: a1b2c3d4e5f6g7h8`\n\n### 2. Date (Timestamp)\n* **Purpose:** Timestamp used for generating the signature and preventing replay attacks.\n* **Format:** RFC 7231 format (e.g., in GMT).\n* **Example:** `Date: Sun, 09 Nov 2025 04:04:00 GMT`\n\n### 3. Authorization (Computed Signature)\n* **Purpose:** The cryptographic signature that verifies the request's authenticity and integrity.\n* **Format:** `SIGNATURE [authHeader]`\n\n**Signature Generation Logic:**\nThe `authHeader` value is derived from a cryptographic hash (e.g., HMAC-SHA256) of canonical request components (HTTP Method, Path, and the contents of the `Date` header), signed with the private **Client Secret**.\n"}}},"paths":{"/partners/{partner_code}/bookings/{booking_id}/":{"patch":{"summary":"Modify Booking","description":"The Modify Booking endpoint is used when a customer wants to make changes to their existing policy. This endpoint allows you to update policy details which may result in price adjustments, refunds, or additional fees. The modification is applied directly.","tags":["Modify Booking"],"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"quotes":{"type":"array","items":{"type":"object","properties":{"id":{"type":"string","description":"The quote ID to modify"},"update_fields":{"type":"object","description":"Fields to update on the quote","additionalProperties":true}},"required":["id","update_fields"]}}}}}}},"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"type":"object","properties":{"id":{"type":"string"},"status":{"type":"string"},"currency":{"type":"string"},"total_price":{"type":"number"},"total_price_formatted":{"type":"string"},"quotes":{"type":"array","items":{"type":"object","properties":{"id":{"type":"string"},"status":{"type":"string"},"price":{"type":"number"},"price_formatted":{"type":"string"},"price_diff":{"type":"number"},"price_diff_formatted":{"type":"string"}}}},"total_price_diff":{"type":"number"},"total_price_diff_formatted":{"type":"string"}}}}}},"403":{"description":"Forbidden","content":{"application/json":{"schema":{"type":"object","properties":{"type":{"type":"string"},"message":{"type":"string"}}}}}},"422":{"description":"Unprocessable Entity","content":{"application/json":{"schema":{"type":"object","properties":{"type":{"type":"string"},"message":{"type":"string"},"errors":{"type":"array","items":{"type":"string"}}}}}}}}}}}} ``` ## Modify Booking - Preview > The Modify Booking Preview endpoint allows you to preview the price changes that would result from a modification without actually applying them. The response includes an update\_id that can be used to confirm the modification. ```json {"openapi":"3.0.0","info":{"title":"Offers API","version":"1.0.0"},"servers":[{"url":"https://api.xcover.com/x"}],"security":[{"CustomAPISignature":[]}],"components":{"securitySchemes":{"CustomAPISignature":{"type":"apiKey","name":"Authorization","in":"header","description":"**Composite Authentication Scheme (Client Key, Date, and Signature)**\n\nThis scheme requires the client to provide **three** mandatory headers in every request:\n\n### 1. X-Api-Key (Client Key)\n* **Purpose:** Public identifier for the API consumer.\n* **Example:** `X-Api-Key: a1b2c3d4e5f6g7h8`\n\n### 2. Date (Timestamp)\n* **Purpose:** Timestamp used for generating the signature and preventing replay attacks.\n* **Format:** RFC 7231 format (e.g., in GMT).\n* **Example:** `Date: Sun, 09 Nov 2025 04:04:00 GMT`\n\n### 3. Authorization (Computed Signature)\n* **Purpose:** The cryptographic signature that verifies the request's authenticity and integrity.\n* **Format:** `SIGNATURE [authHeader]`\n\n**Signature Generation Logic:**\nThe `authHeader` value is derived from a cryptographic hash (e.g., HMAC-SHA256) of canonical request components (HTTP Method, Path, and the contents of the `Date` header), signed with the private **Client Secret**.\n"}}},"paths":{"/partners/{partner_code}/bookings/{booking_id}/quote_for_update":{"patch":{"summary":"Modify Booking - Preview","description":"The Modify Booking Preview endpoint allows you to preview the price changes that would result from a modification without actually applying them. The response includes an update_id that can be used to confirm the modification.","tags":["Modify Booking"],"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"quotes":{"type":"array","items":{"type":"object","properties":{"id":{"type":"string","description":"The quote ID to modify"},"update_fields":{"type":"object","description":"Fields to update on the quote","additionalProperties":true}},"required":["id","update_fields"]}}}}}}},"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"type":"object","properties":{"id":{"type":"string"},"status":{"type":"string"},"currency":{"type":"string"},"total_price":{"type":"number"},"total_price_formatted":{"type":"string"},"quotes":{"type":"array","items":{"type":"object","properties":{"id":{"type":"string"},"status":{"type":"string"},"price":{"type":"number"},"price_formatted":{"type":"string"},"price_diff":{"type":"number"},"price_diff_formatted":{"type":"string"}}}},"total_price_diff":{"type":"number"},"total_price_diff_formatted":{"type":"string"},"update_id":{"type":"string","description":"The update ID to use when confirming this modification via the Confirm Update endpoint."}}}}}},"403":{"description":"Forbidden","content":{"application/json":{"schema":{"type":"object","properties":{"type":{"type":"string"},"message":{"type":"string"}}}}}},"422":{"description":"Unprocessable Entity","content":{"application/json":{"schema":{"type":"object","properties":{"type":{"type":"string"},"message":{"type":"string"},"errors":{"type":"object"}}}}}}}}}}} ``` ## Modify Booking - Confirm > The Confirm Update endpoint finalizes a previewed modification. Use the update\_id returned from the Modify Booking Preview endpoint. ```json {"openapi":"3.0.0","info":{"title":"Offers API","version":"1.0.0"},"servers":[{"url":"https://api.xcover.com/x"}],"security":[{"CustomAPISignature":[]}],"components":{"securitySchemes":{"CustomAPISignature":{"type":"apiKey","name":"Authorization","in":"header","description":"**Composite Authentication Scheme (Client Key, Date, and Signature)**\n\nThis scheme requires the client to provide **three** mandatory headers in every request:\n\n### 1. X-Api-Key (Client Key)\n* **Purpose:** Public identifier for the API consumer.\n* **Example:** `X-Api-Key: a1b2c3d4e5f6g7h8`\n\n### 2. Date (Timestamp)\n* **Purpose:** Timestamp used for generating the signature and preventing replay attacks.\n* **Format:** RFC 7231 format (e.g., in GMT).\n* **Example:** `Date: Sun, 09 Nov 2025 04:04:00 GMT`\n\n### 3. Authorization (Computed Signature)\n* **Purpose:** The cryptographic signature that verifies the request's authenticity and integrity.\n* **Format:** `SIGNATURE [authHeader]`\n\n**Signature Generation Logic:**\nThe `authHeader` value is derived from a cryptographic hash (e.g., HMAC-SHA256) of canonical request components (HTTP Method, Path, and the contents of the `Date` header), signed with the private **Client Secret**.\n"}}},"paths":{"/partners/{partner_code}/bookings/{booking_id}/confirm_update/{update_id}/":{"post":{"summary":"Modify Booking - Confirm","description":"The Confirm Update endpoint finalizes a previewed modification. Use the update_id returned from the Modify Booking Preview endpoint.","tags":["Modify Booking"],"requestBody":{"required":false,"content":{"application/json":{"schema":{"type":"object","properties":{"xpay_charge_id":{"type":"string","description":"XPay charge ID if additional payment is required"}}}}}},"responses":{"201":{"description":"Created","content":{"application/json":{"schema":{"type":"object","properties":{"id":{"type":"string"},"status":{"type":"string"},"currency":{"type":"string"},"total_price":{"type":"number"},"total_price_formatted":{"type":"string"},"quotes":{"type":"array","items":{"type":"object","properties":{"id":{"type":"string"},"status":{"type":"string"},"price":{"type":"number"},"price_formatted":{"type":"string"},"price_diff":{"type":"number"},"price_diff_formatted":{"type":"string"}}}},"total_price_diff":{"type":"number"},"total_price_diff_formatted":{"type":"string"}}}}}},"403":{"description":"Forbidden","content":{"application/json":{"schema":{"type":"object","properties":{"type":{"type":"string"},"message":{"type":"string"}}}}}},"404":{"description":"Not Found","content":{"application/json":{"schema":{"type":"object","properties":{"type":{"type":"string"},"message":{"type":"string"}}}}}},"422":{"description":"Unprocessable Entity","content":{"application/json":{"schema":{"type":"object","properties":{"type":{"type":"string"},"message":{"type":"string"}}}}}}}}}}} ``` --- # Agent Instructions: 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: ``` GET https://partner-docs.covergenius.com/offers/vertical-examples/travel-accomodation/modify-booking.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.