> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.tabs.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.tabs.com/_mcp/server. # Create billing term seat amendment POST https://integrators.prod.api.tabsplatform.com/v3/contracts/{id}/billing-terms/{billingTermId}/seat-amendment Content-Type: application/json Reference: https://docs.tabs.com/api-reference/contracts/contracts-billing-microservice-controller-create-billing-term-seat-amendment ## Authentication - `Authorization` header (required) ## Request ### Path parameters - `id` (string, required) — Contract id - `billingTermId` (string, required) — Billing term id ### Body (application/json) - `effectiveDate` (datetime, required) — Effective date of the seat amendment - `newQuantity` (double, required) — New quantity of seats - `prorationPolicy` (enum, optional) — Proration policy for the amendment: • NONE: No proration applied - full period charges regardless of timing • DAY: Proration calculated on a daily basis • MONTH: Proration calculated on a monthly basis • YEAR: Proration calculated on a yearly basis - Allowed values: `NONE`, `DAY`, `MONTH`, `YEAR` - `trueUpTiming` (enum, optional) — True-up timing for the amendment: • IMMEDIATE: True-up amounts are applied immediately on the effective date • CO_TERM: True-up amounts are applied at the next invoice date after the effective date - Allowed values: `IMMEDIATE`, `CO_TERM` ## Response ### 201 The seat amendment - `payload` (object, required) — Response payload, will be empty when success is false - `id` (string, required) — Unique identifier for the seat amendment - `obligationId` (string, required) — Unique identifier for the obligation this amendment belongs to - `effectiveDate` (datetime, required) — Effective date of the seat amendment - `newQuantity` (double, required) — New quantity of seats - `lastUpdatedAt` (datetime, required) — Timestamp when the amendment was last updated - `prorationPolicy` (enum, optional) — Proration policy for the amendment: • NONE: No proration applied - full period charges regardless of timing • DAY: Proration calculated on a daily basis • MONTH: Proration calculated on a monthly basis • YEAR: Proration calculated on a yearly basis - Allowed values: `NONE`, `DAY`, `MONTH`, `YEAR` - `trueUpTiming` (enum, optional) — True-up timing for the amendment: • IMMEDIATE: True-up amounts are applied immediately on the effective date • CO_TERM: True-up amounts are applied at the next invoice date after the effective date - Allowed values: `IMMEDIATE`, `CO_TERM` - `success` (boolean, required) — Boolean with true=success, false=failure - `message` (string, required) — Plain-text description of the result - `error` (object, optional) — json element with any error messages or warnings - `code` (double, required) — API response code - `message` (string, required) — API response message - `details` (object, optional) — Additional details about the error ## Examples **Request** ```json { "effectiveDate": "2026-01-01", "newQuantity": 150 } ``` **Response** ```json { "payload": { "id": "123e4567-e89b-12d3-a456-426614174000", "obligationId": "456e7890-e89b-12d3-a456-426614174001", "effectiveDate": "2026-01-01", "newQuantity": 150, "lastUpdatedAt": "2025-09-19T00:00:00.000Z", "prorationPolicy": "DAY", "trueUpTiming": "IMMEDIATE" }, "success": true, "message": "string", "error": { "code": 1.1, "message": "string", "details": {} } } ``` **SDK Code** ```python import requests url = "https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment" payload = { "effectiveDate": "2026-01-01", "newQuantity": 150 } headers = { "Authorization": "", "Content-Type": "application/json" } response = requests.post(url, json=payload, headers=headers) print(response.json()) ``` ```javascript const url = 'https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment'; const options = { method: 'POST', headers: {Authorization: '', 'Content-Type': 'application/json'}, body: '{"effectiveDate":"2026-01-01","newQuantity":150}' }; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment" payload := strings.NewReader("{\n \"effectiveDate\": \"2026-01-01\",\n \"newQuantity\": 150\n}") req, _ := http.NewRequest("POST", url, payload) req.Header.Add("Authorization", "") req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body)) } ``` ```ruby require 'uri' require 'net/http' url = URI("https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Post.new(url) request["Authorization"] = '' request["Content-Type"] = 'application/json' request.body = "{\n \"effectiveDate\": \"2026-01-01\",\n \"newQuantity\": 150\n}" response = http.request(request) puts response.read_body ``` ```java import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.post("https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment") .header("Authorization", "") .header("Content-Type", "application/json") .body("{\n \"effectiveDate\": \"2026-01-01\",\n \"newQuantity\": 150\n}") .asString(); ``` ```php request('POST', 'https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment', [ 'body' => '{ "effectiveDate": "2026-01-01", "newQuantity": 150 }', 'headers' => [ 'Authorization' => '', 'Content-Type' => 'application/json', ], ]); echo $response->getBody(); ``` ```csharp using RestSharp; var client = new RestClient("https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment"); var request = new RestRequest(Method.POST); request.AddHeader("Authorization", ""); request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", "{\n \"effectiveDate\": \"2026-01-01\",\n \"newQuantity\": 150\n}", ParameterType.RequestBody); IRestResponse response = client.Execute(request); ``` ```swift import Foundation let headers = [ "Authorization": "", "Content-Type": "application/json" ] let parameters = [ "effectiveDate": "2026-01-01", "newQuantity": 150 ] as [String : Any] let postData = JSONSerialization.data(withJSONObject: parameters, options: []) let request = NSMutableURLRequest(url: NSURL(string: "https://integrators.prod.api.tabsplatform.com/v3/contracts/123e4567-e89b-12d3-a456-426614174000/billing-terms/123e4567-e89b-12d3-a456-426614174000/seat-amendment")! as URL, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10.0) request.httpMethod = "POST" request.allHTTPHeaderFields = headers request.httpBody = postData as Data let session = URLSession.shared let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in if (error != nil) { print(error as Any) } else { let httpResponse = response as? HTTPURLResponse print(httpResponse) } }) dataTask.resume() ```