Create Subscription

Create a subscription

curl --request POST \
  --url https://api-eu.flexportal.io/v1/subscriptions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Tenant-ID: <tenant-id>' \
  --data '
{
  "orderId": "ord_abc123xyz",
  "orderItemIndex": 0,
  "serialNumber": "C02ZN1ABCD12",
  "billingStartOption": "immediate"
}
'

import requests

url = "https://api-eu.flexportal.io/v1/subscriptions"

payload = {
    "orderId": "ord_abc123xyz",
    "orderItemIndex": 0,
    "serialNumber": "C02ZN1ABCD12",
    "billingStartOption": "immediate"
}
headers = {
    "Tenant-ID": "<tenant-id>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Tenant-ID': '<tenant-id>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    orderId: 'ord_abc123xyz',
    orderItemIndex: 0,
    serialNumber: 'C02ZN1ABCD12',
    billingStartOption: 'immediate'
  })
};

fetch('https://api-eu.flexportal.io/v1/subscriptions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api-eu.flexportal.io/v1/subscriptions",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'orderId' => 'ord_abc123xyz',
    'orderItemIndex' => 0,
    'serialNumber' => 'C02ZN1ABCD12',
    'billingStartOption' => 'immediate'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Tenant-ID: <tenant-id>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api-eu.flexportal.io/v1/subscriptions"

	payload := strings.NewReader("{\n  \"orderId\": \"ord_abc123xyz\",\n  \"orderItemIndex\": 0,\n  \"serialNumber\": \"C02ZN1ABCD12\",\n  \"billingStartOption\": \"immediate\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Tenant-ID", "<tenant-id>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api-eu.flexportal.io/v1/subscriptions")
  .header("Tenant-ID", "<tenant-id>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"orderId\": \"ord_abc123xyz\",\n  \"orderItemIndex\": 0,\n  \"serialNumber\": \"C02ZN1ABCD12\",\n  \"billingStartOption\": \"immediate\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-eu.flexportal.io/v1/subscriptions")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Tenant-ID"] = '<tenant-id>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"orderId\": \"ord_abc123xyz\",\n  \"orderItemIndex\": 0,\n  \"serialNumber\": \"C02ZN1ABCD12\",\n  \"billingStartOption\": \"immediate\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "message": "<string>",
  "rentalId": "<string>",
  "rental": {
    "rentalId": "<string>",
    "tenantId": "<string>",
    "assetSerialNumber": "<string>",
    "customerId": "<string>",
    "sku": "<string>",
    "productName": "<string>",
    "monthlyAmount": 123,
    "currency": "<string>",
    "status": "active",
    "originalContractLength": 123,
    "contractLength": 123,
    "startDate": "<string>",
    "orderId": "<string>",
    "customerEmail": "<string>",
    "customerName": "<string>",
    "createdAt": "<string>",
    "updatedAt": "<string>",
    "createdBy": "<string>",
    "productId": "<string>",
    "variantId": "<string>",
    "productImageUrl": "<string>",
    "billingGroupId": "<string>",
    "endDate": "<string>",
    "nextBillingDate": "<string>",
    "lastModifiedDate": "<string>",
    "extensionHistory": [
      {
        "extensionMonths": 60,
        "oldContractLength": 60,
        "newContractLength": 60,
        "oldMonthlyAmount": 1,
        "newMonthlyAmount": 1,
        "extendedBy": {
          "userId": "<string>",
          "email": "<string>",
          "displayName": "<string>",
          "role": "<string>",
          "memberId": "<string>"
        },
        "oldEndDate": "<string>",
        "newEndDate": "<string>",
        "extendedAt": "<string>",
        "reason": "<string>",
        "notes": "<string>"
      }
    ],
    "actualMonthsRented": 123,
    "monthsSaved": 123,
    "listPrice": 123,
    "listPriceSource": "variant",
    "listPriceCapturedAt": "<string>",
    "acquisitionCost": 123,
    "acquisitionCostSource": "variant",
    "acquisitionCostCapturedAt": "<string>",
    "totalCollected": 123,
    "costRecoveryPercent": 123,
    "currentProfit": 123,
    "breakevenMonths": 123,
    "hasReachedBreakeven": true,
    "recoveryStatus": "profitable",
    "replacementHistory": [
      {
        "oldSerialNumber": "<string>",
        "newSerialNumber": "<string>",
        "reason": "<string>",
        "replacedBy": {
          "userId": "<string>",
          "email": "<string>",
          "displayName": "<string>",
          "role": "<string>",
          "memberId": "<string>"
        },
        "replacedAt": "<string>",
        "damageAssessment": "<string>",
        "insuranceClaim": true,
        "notes": "<string>"
      }
    ],
    "buyoutDetails": {
      "buyoutPrice": 1,
      "calculationMethod": "auto_calculated",
      "reason": "customer_request",
      "processedBy": {
        "userId": "<string>",
        "email": "<string>",
        "displayName": "<string>",
        "role": "<string>",
        "memberId": "<string>"
      },
      "buyoutDate": "<string>",
      "calculationBreakdown": {
        "remainingMonths": 60,
        "remainingMonthsPayment": 1,
        "listPricePercentage": 123,
        "listPriceAmount": 1,
        "flatFee": 1
      },
      "notes": "<string>"
    },
    "earlyReturnDetails": {
      "fee": 1,
      "feeWaived": true,
      "calculationMethod": "auto_calculated",
      "returnCondition": "excellent",
      "reason": "<string>",
      "processedBy": {
        "userId": "<string>",
        "email": "<string>",
        "displayName": "<string>",
        "role": "<string>",
        "memberId": "<string>"
      },
      "returnedAt": "<string>",
      "calculationBreakdown": {
        "method": "remaining_months",
        "remainingMonths": 60,
        "gracePeriodApplied": true,
        "daysFromStart": 1825
      },
      "damageAssessment": "<string>",
      "notes": "<string>"
    },
    "cancellationDetails": {
      "reason": "customer_request",
      "processedBy": {
        "userId": "<string>",
        "email": "<string>",
        "displayName": "<string>",
        "role": "<string>",
        "memberId": "<string>"
      },
      "cancelledAt": "<string>",
      "notes": "<string>"
    },
    "upgradeFromRentalId": "<string>",
    "customFields": {},
    "notes": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}

POST

subscriptions

Create a subscription

curl --request POST \
  --url https://api-eu.flexportal.io/v1/subscriptions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Tenant-ID: <tenant-id>' \
  --data '
{
  "orderId": "ord_abc123xyz",
  "orderItemIndex": 0,
  "serialNumber": "C02ZN1ABCD12",
  "billingStartOption": "immediate"
}
'

import requests

url = "https://api-eu.flexportal.io/v1/subscriptions"

payload = {
    "orderId": "ord_abc123xyz",
    "orderItemIndex": 0,
    "serialNumber": "C02ZN1ABCD12",
    "billingStartOption": "immediate"
}
headers = {
    "Tenant-ID": "<tenant-id>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Tenant-ID': '<tenant-id>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    orderId: 'ord_abc123xyz',
    orderItemIndex: 0,
    serialNumber: 'C02ZN1ABCD12',
    billingStartOption: 'immediate'
  })
};

fetch('https://api-eu.flexportal.io/v1/subscriptions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api-eu.flexportal.io/v1/subscriptions",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'orderId' => 'ord_abc123xyz',
    'orderItemIndex' => 0,
    'serialNumber' => 'C02ZN1ABCD12',
    'billingStartOption' => 'immediate'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Tenant-ID: <tenant-id>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api-eu.flexportal.io/v1/subscriptions"

	payload := strings.NewReader("{\n  \"orderId\": \"ord_abc123xyz\",\n  \"orderItemIndex\": 0,\n  \"serialNumber\": \"C02ZN1ABCD12\",\n  \"billingStartOption\": \"immediate\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Tenant-ID", "<tenant-id>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api-eu.flexportal.io/v1/subscriptions")
  .header("Tenant-ID", "<tenant-id>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"orderId\": \"ord_abc123xyz\",\n  \"orderItemIndex\": 0,\n  \"serialNumber\": \"C02ZN1ABCD12\",\n  \"billingStartOption\": \"immediate\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-eu.flexportal.io/v1/subscriptions")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Tenant-ID"] = '<tenant-id>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"orderId\": \"ord_abc123xyz\",\n  \"orderItemIndex\": 0,\n  \"serialNumber\": \"C02ZN1ABCD12\",\n  \"billingStartOption\": \"immediate\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "message": "<string>",
  "rentalId": "<string>",
  "rental": {
    "rentalId": "<string>",
    "tenantId": "<string>",
    "assetSerialNumber": "<string>",
    "customerId": "<string>",
    "sku": "<string>",
    "productName": "<string>",
    "monthlyAmount": 123,
    "currency": "<string>",
    "status": "active",
    "originalContractLength": 123,
    "contractLength": 123,
    "startDate": "<string>",
    "orderId": "<string>",
    "customerEmail": "<string>",
    "customerName": "<string>",
    "createdAt": "<string>",
    "updatedAt": "<string>",
    "createdBy": "<string>",
    "productId": "<string>",
    "variantId": "<string>",
    "productImageUrl": "<string>",
    "billingGroupId": "<string>",
    "endDate": "<string>",
    "nextBillingDate": "<string>",
    "lastModifiedDate": "<string>",
    "extensionHistory": [
      {
        "extensionMonths": 60,
        "oldContractLength": 60,
        "newContractLength": 60,
        "oldMonthlyAmount": 1,
        "newMonthlyAmount": 1,
        "extendedBy": {
          "userId": "<string>",
          "email": "<string>",
          "displayName": "<string>",
          "role": "<string>",
          "memberId": "<string>"
        },
        "oldEndDate": "<string>",
        "newEndDate": "<string>",
        "extendedAt": "<string>",
        "reason": "<string>",
        "notes": "<string>"
      }
    ],
    "actualMonthsRented": 123,
    "monthsSaved": 123,
    "listPrice": 123,
    "listPriceSource": "variant",
    "listPriceCapturedAt": "<string>",
    "acquisitionCost": 123,
    "acquisitionCostSource": "variant",
    "acquisitionCostCapturedAt": "<string>",
    "totalCollected": 123,
    "costRecoveryPercent": 123,
    "currentProfit": 123,
    "breakevenMonths": 123,
    "hasReachedBreakeven": true,
    "recoveryStatus": "profitable",
    "replacementHistory": [
      {
        "oldSerialNumber": "<string>",
        "newSerialNumber": "<string>",
        "reason": "<string>",
        "replacedBy": {
          "userId": "<string>",
          "email": "<string>",
          "displayName": "<string>",
          "role": "<string>",
          "memberId": "<string>"
        },
        "replacedAt": "<string>",
        "damageAssessment": "<string>",
        "insuranceClaim": true,
        "notes": "<string>"
      }
    ],
    "buyoutDetails": {
      "buyoutPrice": 1,
      "calculationMethod": "auto_calculated",
      "reason": "customer_request",
      "processedBy": {
        "userId": "<string>",
        "email": "<string>",
        "displayName": "<string>",
        "role": "<string>",
        "memberId": "<string>"
      },
      "buyoutDate": "<string>",
      "calculationBreakdown": {
        "remainingMonths": 60,
        "remainingMonthsPayment": 1,
        "listPricePercentage": 123,
        "listPriceAmount": 1,
        "flatFee": 1
      },
      "notes": "<string>"
    },
    "earlyReturnDetails": {
      "fee": 1,
      "feeWaived": true,
      "calculationMethod": "auto_calculated",
      "returnCondition": "excellent",
      "reason": "<string>",
      "processedBy": {
        "userId": "<string>",
        "email": "<string>",
        "displayName": "<string>",
        "role": "<string>",
        "memberId": "<string>"
      },
      "returnedAt": "<string>",
      "calculationBreakdown": {
        "method": "remaining_months",
        "remainingMonths": 60,
        "gracePeriodApplied": true,
        "daysFromStart": 1825
      },
      "damageAssessment": "<string>",
      "notes": "<string>"
    },
    "cancellationDetails": {
      "reason": "customer_request",
      "processedBy": {
        "userId": "<string>",
        "email": "<string>",
        "displayName": "<string>",
        "role": "<string>",
        "memberId": "<string>"
      },
      "cancelledAt": "<string>",
      "notes": "<string>"
    },
    "upgradeFromRentalId": "<string>",
    "customFields": {},
    "notes": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}

Overview

Create a new subscription to fulfill an order item. This is the key step that activates a customer’s subscription—it assigns a physical asset (by serial number) to an order line item and starts the billing cycle.

You must have a confirmed order before creating subscriptions. Subscriptions are created for each unit in an order—a line item with quantity 3 requires 3 separate subscription create calls.

The Fulfillment Flow

Order created (status: pending)
Order confirmed (status: confirmed)
Create subscription for each item ← This endpoint
Order fulfilled (status: fulfilled) when all items have subscriptions

Common Use Cases

Order Fulfillment

Activate subscriptions as devices are shipped to customers

Warehouse Integration

Automatically create subscriptions when assets are scanned for shipping

Bulk Activation

Fulfill multiple-unit orders by creating subscriptions for each item

Migration

Import existing subscriptions when migrating from another platform

Request Fields

Field	Required	Description
`orderId`	Yes	The order to fulfill
`assetSerialNumber`	Yes	Serial number of the asset to assign
`customerId`	Yes	Customer ID for this subscription
`billingGroupId`	No	Billing group for consolidated B2B invoicing
`startDate`	No	Subscription start date (default: today)
`contractLength`	No	Contract duration in months (1-120, default: from order)
`notes`	No	Internal notes for this subscription

Basic Example

{
  "orderId": "ord_abc123",
  "assetSerialNumber": "SN123456789",
  "customerId": "cust_xyz789"
}

Example with Custom Start Date

{
  "orderId": "ord_abc123",
  "assetSerialNumber": "SN123456789",
  "customerId": "cust_xyz789",
  "startDate": "2025-02-01"
}

Use a future start date when shipping devices—the subscription (and billing) starts when the customer receives the device, not when you create the record.

Fulfilling Multi-Unit Orders

For an order with 3 units of the same product:

const order = await getOrder('ord_abc123');
const item = order.items[0]; // First line item

// Get available assets for this SKU
const { assets } = await listAssets({
  sku: item.sku,
  status: 'available',
  limit: item.quantity
});

// Create subscription for each unit
for (const asset of assets) {
  await createSubscription({
    orderId: order.orderId,
    assetSerialNumber: asset.serialNumber,
    customerId: order.customerId
  });
}

Asset Requirements

The serial number must reference an asset that:

Exists in your asset inventory
Matches the SKU from the order item
Is available (status: available)

After subscription creation, the asset status changes to rented_out.

What Gets Created

When you create a subscription:

Subscription record created with billing schedule
Asset status updated to rented_out
Order progress updated (rentedDevices count)
First payment scheduled based on tenant settings
Customer record updated with new device count

Billing Start Options

Your tenant settings control when billing starts:

Setting	Behavior
`immediate`	First payment due immediately
`first_of_next_month`	First payment on 1st of next month
`same_day_next_month`	First payment same day next month

Error Handling

Error Code	Cause	Solution
`ORDER_NOT_FOUND`	Invalid order ID	Verify order exists
`ORDER_NOT_CONFIRMED`	Order not in confirmed status	Confirm order first
`ITEM_FULLY_FULFILLED`	All units for this item already have subscriptions	Check order item quantity
`ASSET_NOT_FOUND`	Serial number doesn’t exist	Create asset first
`ASSET_NOT_AVAILABLE`	Asset already rented or unavailable	Use a different asset
`SKU_MISMATCH`	Asset SKU doesn’t match order item	Verify correct asset

Get Order - Check order details and items
List Assets - Find available assets
Create Asset - Add new assets to inventory
List Subscriptions - View created subscriptions

Authorizations

Authorization

string

header

required

API key obtained from FlexPortal dashboard

Headers

Tenant-ID

string

required

Your tenant identifier

Body

application/json

orderId

string

required

Minimum string length: 1

assetSerialNumber

string

required

Minimum string length: 1

customerId

string

required

Minimum string length: 1

billingGroupId

string

startDate

string<date-time>

contractLength

integer

Required range: 1 < x <= 120

notes

string

Response

Subscription created

success

enum<boolean>

required

Available options:

true

message

string

required

rentalId

string

required

rental

object

required

Show child attributes

Overview

Products

Customers

Orders

Subscriptions

Assets

Payments

Billing Groups

Files

Exports

Overview

The Fulfillment Flow

Common Use Cases

Order Fulfillment

Warehouse Integration

Bulk Activation

Migration

Request Fields

Basic Example

Example with Custom Start Date

Fulfilling Multi-Unit Orders

Asset Requirements

What Gets Created

Billing Start Options

Error Handling

Authorizations

Headers

Body

Response

​Overview

​The Fulfillment Flow

​Common Use Cases

Order Fulfillment

Warehouse Integration

Bulk Activation

Migration

​Request Fields

​Basic Example

​Example with Custom Start Date

​Fulfilling Multi-Unit Orders

​Asset Requirements

​What Gets Created

​Billing Start Options

​Error Handling

​Related Endpoints

Authorizations

Headers

Body

Response

Overview

The Fulfillment Flow

Common Use Cases

Request Fields

Basic Example

Example with Custom Start Date

Fulfilling Multi-Unit Orders

Asset Requirements

What Gets Created

Billing Start Options

Error Handling

Related Endpoints