Resend invoice email to customer (rotates pay link)

cURL

curl -sS -X POST "$FLUIDE_BASE_URL/api/v1/invoices/string/resend" \
  -H "Authorization: Bearer $FLUIDE_ACCESS_TOKEN" \
  -H "X-Fluide-Api-Key: $FLUIDE_API_KEY" \
  -H "X-Fluide-Client-Id: fluide-developer" \
  -H "authorization: your_authorization" \
  -H "X-Workspace-Id: $FLUIDE_WORKSPACE_ID" \
  -H "X-Acting-Company-Id: $FLUIDE_COMPANY_ID"

const baseUrl = process.env.FLUIDE_BASE_URL;

const response = await fetch(`${baseUrl}/api/v1/invoices/string/resend`, {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.FLUIDE_ACCESS_TOKEN}`,
    'X-Fluide-Api-Key': process.env.FLUIDE_API_KEY,
    'X-Fluide-Client-Id': 'fluide-developer',
    'authorization': 'your_authorization',
    'X-Workspace-Id': process.env.FLUIDE_WORKSPACE_ID,
    'X-Acting-Company-Id': process.env.FLUIDE_COMPANY_ID,
  },
});

if (!response.ok) throw new Error(`HTTP ${response.status}: ${await response.text()}`);
console.log(await response.json());

import os
import requests

base_url = os.environ["FLUIDE_BASE_URL"]
headers = {
        "Authorization": f"Bearer {os.environ['FLUIDE_ACCESS_TOKEN']}",
        "X-Fluide-Api-Key": os.environ["FLUIDE_API_KEY"],
        "X-Fluide-Client-Id": "fluide-developer",
        "authorization": "your_authorization",
        "X-Workspace-Id": os.environ["FLUIDE_WORKSPACE_ID"],
        "X-Acting-Company-Id": os.environ["FLUIDE_COMPANY_ID"],
}

response = requests.post(
    f"{base_url}/api/v1/invoices/string/resend",
    headers=headers,
    timeout=30,
)
response.raise_for_status()
print(response.json())

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

String baseUrl = System.getenv("FLUIDE_BASE_URL");
HttpClient client = HttpClient.newHttpClient();
HttpRequest.Builder builder = HttpRequest.newBuilder()
    .uri(URI.create(baseUrl + "/api/v1/invoices/string/resend"))
    .header("Authorization", "Bearer " + System.getenv("FLUIDE_ACCESS_TOKEN"))
    .header("X-Fluide-Api-Key", System.getenv("FLUIDE_API_KEY"))
    .header("X-Fluide-Client-Id", "fluide-developer")
    .header("authorization", "your_authorization")
    .header("X-Workspace-Id", System.getenv("FLUIDE_WORKSPACE_ID"))
    .header("X-Acting-Company-Id", System.getenv("FLUIDE_COMPANY_ID"))
    .POST(HttpRequest.BodyPublishers.noBody())
    .build();
HttpResponse<String> response = client.send(builder.build(), HttpResponse.BodyHandlers.ofString());
if (response.statusCode() >= 400) throw new RuntimeException("HTTP " + response.statusCode() + ": " + response.body());
System.out.println(response.body());

<?php
$baseUrl = getenv("FLUIDE_BASE_URL");
$ch = curl_init($baseUrl . "/api/v1/invoices/string/resend");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . getenv('FLUIDE_ACCESS_TOKEN'),
        'X-Fluide-Api-Key: ' . getenv('FLUIDE_API_KEY'),
        'X-Fluide-Client-Id: fluide-developer',
        'authorization: your_authorization',
        'X-Workspace-Id: ' . getenv('FLUIDE_WORKSPACE_ID'),
        'X-Acting-Company-Id: ' . getenv('FLUIDE_COMPANY_ID'),
    ],
]);
$response = curl_exec($ch);
if ($response === false) throw new RuntimeException(curl_error($ch));
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($status >= 400) throw new RuntimeException("HTTP $status: $response");
echo $response;

{
  "success": true,
  "message": "Operation completed successfully",
  "data": {}
}

{
  "organizationId": "<string>",
  "companyId": "<string>",
  "invoiceNumber": "<string>",
  "customerId": "<string>",
  "projectId": "<string>",
  "clientId": "<string>",
  "issueDate": "2023-11-07T05:31:56Z",
  "dueDate": "2023-11-07T05:31:56Z",
  "subtotal": 123,
  "taxAmount": 123,
  "total": 123,
  "currency": "<string>",
  "amountPaid": 123,
  "balanceDue": 123,
  "postedAt": "2023-11-07T05:31:56Z",
  "postedBy": "<string>",
  "postedJournalEntryId": "<string>",
  "notes": "<string>",
  "sourceDocumentIds": [
    "<string>"
  ],
  "sentByEmail": "<string>",
  "lineItems": [
    {
      "invoiceId": "<string>",
      "invoice": "<unknown>",
      "lineNumber": 123,
      "description": "<string>",
      "quantity": 123,
      "unitPrice": 123,
      "discountAmount": 123,
      "taxAmount": 123,
      "lineTotal": 123,
      "glAccountId": "<string>",
      "taxCodeId": "<string>",
      "id": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "allocations": [
    {
      "invoiceId": "<string>",
      "invoice": "<unknown>",
      "fluidePayTransactionId": "<string>",
      "externalReference": "<string>",
      "evidenceDocumentIds": [
        "<string>"
      ],
      "allocatedAmount": 123,
      "currency": "<string>",
      "allocatedAt": "2023-11-07T05:31:56Z",
      "allocatedBy": "<string>",
      "memo": "<string>",
      "id": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "creditNotes": [
    {
      "organizationId": "<string>",
      "companyId": "<string>",
      "creditNoteNumber": "<string>",
      "invoiceId": "<string>",
      "invoice": "<unknown>",
      "amount": 123,
      "currency": "<string>",
      "reason": "<string>",
      "postedAt": "2023-11-07T05:31:56Z",
      "postedBy": "<string>",
      "postedJournalEntryId": "<string>",
      "id": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "id": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "deletedAt": "2023-11-07T05:31:56Z"
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

POST

api

invoices

{id}

resend

cURL

curl -sS -X POST "$FLUIDE_BASE_URL/api/v1/invoices/string/resend" \
  -H "Authorization: Bearer $FLUIDE_ACCESS_TOKEN" \
  -H "X-Fluide-Api-Key: $FLUIDE_API_KEY" \
  -H "X-Fluide-Client-Id: fluide-developer" \
  -H "authorization: your_authorization" \
  -H "X-Workspace-Id: $FLUIDE_WORKSPACE_ID" \
  -H "X-Acting-Company-Id: $FLUIDE_COMPANY_ID"

const baseUrl = process.env.FLUIDE_BASE_URL;

const response = await fetch(`${baseUrl}/api/v1/invoices/string/resend`, {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.FLUIDE_ACCESS_TOKEN}`,
    'X-Fluide-Api-Key': process.env.FLUIDE_API_KEY,
    'X-Fluide-Client-Id': 'fluide-developer',
    'authorization': 'your_authorization',
    'X-Workspace-Id': process.env.FLUIDE_WORKSPACE_ID,
    'X-Acting-Company-Id': process.env.FLUIDE_COMPANY_ID,
  },
});

if (!response.ok) throw new Error(`HTTP ${response.status}: ${await response.text()}`);
console.log(await response.json());

import os
import requests

base_url = os.environ["FLUIDE_BASE_URL"]
headers = {
        "Authorization": f"Bearer {os.environ['FLUIDE_ACCESS_TOKEN']}",
        "X-Fluide-Api-Key": os.environ["FLUIDE_API_KEY"],
        "X-Fluide-Client-Id": "fluide-developer",
        "authorization": "your_authorization",
        "X-Workspace-Id": os.environ["FLUIDE_WORKSPACE_ID"],
        "X-Acting-Company-Id": os.environ["FLUIDE_COMPANY_ID"],
}

response = requests.post(
    f"{base_url}/api/v1/invoices/string/resend",
    headers=headers,
    timeout=30,
)
response.raise_for_status()
print(response.json())

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

String baseUrl = System.getenv("FLUIDE_BASE_URL");
HttpClient client = HttpClient.newHttpClient();
HttpRequest.Builder builder = HttpRequest.newBuilder()
    .uri(URI.create(baseUrl + "/api/v1/invoices/string/resend"))
    .header("Authorization", "Bearer " + System.getenv("FLUIDE_ACCESS_TOKEN"))
    .header("X-Fluide-Api-Key", System.getenv("FLUIDE_API_KEY"))
    .header("X-Fluide-Client-Id", "fluide-developer")
    .header("authorization", "your_authorization")
    .header("X-Workspace-Id", System.getenv("FLUIDE_WORKSPACE_ID"))
    .header("X-Acting-Company-Id", System.getenv("FLUIDE_COMPANY_ID"))
    .POST(HttpRequest.BodyPublishers.noBody())
    .build();
HttpResponse<String> response = client.send(builder.build(), HttpResponse.BodyHandlers.ofString());
if (response.statusCode() >= 400) throw new RuntimeException("HTTP " + response.statusCode() + ": " + response.body());
System.out.println(response.body());

<?php
$baseUrl = getenv("FLUIDE_BASE_URL");
$ch = curl_init($baseUrl . "/api/v1/invoices/string/resend");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . getenv('FLUIDE_ACCESS_TOKEN'),
        'X-Fluide-Api-Key: ' . getenv('FLUIDE_API_KEY'),
        'X-Fluide-Client-Id: fluide-developer',
        'authorization: your_authorization',
        'X-Workspace-Id: ' . getenv('FLUIDE_WORKSPACE_ID'),
        'X-Acting-Company-Id: ' . getenv('FLUIDE_COMPANY_ID'),
    ],
]);
$response = curl_exec($ch);
if ($response === false) throw new RuntimeException(curl_error($ch));
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($status >= 400) throw new RuntimeException("HTTP $status: $response");
echo $response;

{
  "success": true,
  "message": "Operation completed successfully",
  "data": {}
}

{
  "organizationId": "<string>",
  "companyId": "<string>",
  "invoiceNumber": "<string>",
  "customerId": "<string>",
  "projectId": "<string>",
  "clientId": "<string>",
  "issueDate": "2023-11-07T05:31:56Z",
  "dueDate": "2023-11-07T05:31:56Z",
  "subtotal": 123,
  "taxAmount": 123,
  "total": 123,
  "currency": "<string>",
  "amountPaid": 123,
  "balanceDue": 123,
  "postedAt": "2023-11-07T05:31:56Z",
  "postedBy": "<string>",
  "postedJournalEntryId": "<string>",
  "notes": "<string>",
  "sourceDocumentIds": [
    "<string>"
  ],
  "sentByEmail": "<string>",
  "lineItems": [
    {
      "invoiceId": "<string>",
      "invoice": "<unknown>",
      "lineNumber": 123,
      "description": "<string>",
      "quantity": 123,
      "unitPrice": 123,
      "discountAmount": 123,
      "taxAmount": 123,
      "lineTotal": 123,
      "glAccountId": "<string>",
      "taxCodeId": "<string>",
      "id": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "allocations": [
    {
      "invoiceId": "<string>",
      "invoice": "<unknown>",
      "fluidePayTransactionId": "<string>",
      "externalReference": "<string>",
      "evidenceDocumentIds": [
        "<string>"
      ],
      "allocatedAmount": 123,
      "currency": "<string>",
      "allocatedAt": "2023-11-07T05:31:56Z",
      "allocatedBy": "<string>",
      "memo": "<string>",
      "id": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "creditNotes": [
    {
      "organizationId": "<string>",
      "companyId": "<string>",
      "creditNoteNumber": "<string>",
      "invoiceId": "<string>",
      "invoice": "<unknown>",
      "amount": 123,
      "currency": "<string>",
      "reason": "<string>",
      "postedAt": "2023-11-07T05:31:56Z",
      "postedBy": "<string>",
      "postedJournalEntryId": "<string>",
      "id": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "id": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "deletedAt": "2023-11-07T05:31:56Z"
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

{
  "success": false,
  "message": "Validation failed",
  "code": "VALIDATION_FAILED",
  "statusCode": 400,
  "timestamp": "2026-06-03T12:00:00.000Z",
  "errors": {
    "from": [
      "from must be a valid date"
    ]
  }
}

Authorizations

Authorization

string

header

required

Access token JWT. Use as Authorization: Bearer . In the API playground, paste the JWT only.

X-Fluide-Api-Key

string

header

default:fl_dev_your_key

required

Developer API key (fl_dev_...). Required on every API call with a machine access token.

X-Fluide-Client-Id

string

header

default:fluide-developer

required

First-party client audience. Must match the fluide_client_id claim on the JWT. Use fluide-developer for Connect.

Headers

authorization

string

required

X-Workspace-Id

string<uuid>

Partner / ISV only: UUID of the workspace that owns the client company. Required together with X-Acting-Company-Id when scoping product APIs to a merchant. See /getting-started/multi-tenancy.

X-Acting-Company-Id

string<uuid>

Partner / ISV only: UUID of the client company to act on. Must belong to the workspace in X-Workspace-Id.

Path Parameters

string

required

Response

Resend invoice email to customer (rotates pay link)

success

boolean

required

Whether the request succeeded

Example:

true

message

string

required

Human-readable outcome message (localized when i18n is configured)

Example:

"Operation completed successfully"

data

object

Endpoint-specific payload

Send invoice to customer via email with pay link Duplicate invoice into a new draft

Auth API

HR API

Payroll API

Pay API

Books API

Utils API

Resend invoice email to customer (rotates pay link)

Authorizations

Headers

Path Parameters

Response