Add Credit Note Attachments
Creates attachment metadata and returns presigned upload URLs. Upload each file with PUT to the returned uploadUrl. Only draft credit notes.
curl --request POST \
--url https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments \
--header 'Content-Type: application/json' \
--header 'X-Auth-Token: <api-key>' \
--data '
{
"attachments": [
{
"fileName": "<string>",
"contentType": "<string>",
"fileSize": 123
}
]
}
'import requests
url = "https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments"
payload = { "attachments": [
{
"fileName": "<string>",
"contentType": "<string>",
"fileSize": 123
}
] }
headers = {
"X-Auth-Token": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'X-Auth-Token': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({attachments: [{fileName: '<string>', contentType: '<string>', fileSize: 123}]})
};
fetch('https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments', 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.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments",
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([
'attachments' => [
[
'fileName' => '<string>',
'contentType' => '<string>',
'fileSize' => 123
]
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"X-Auth-Token: <api-key>"
],
]);
$response = curl_exec($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.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments"
payload := strings.NewReader("{\n \"attachments\": [\n {\n \"fileName\": \"<string>\",\n \"contentType\": \"<string>\",\n \"fileSize\": 123\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("X-Auth-Token", "<api-key>")
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.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments")
.header("X-Auth-Token", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"attachments\": [\n {\n \"fileName\": \"<string>\",\n \"contentType\": \"<string>\",\n \"fileSize\": 123\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["X-Auth-Token"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"attachments\": [\n {\n \"fileName\": \"<string>\",\n \"contentType\": \"<string>\",\n \"fileSize\": 123\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": [
{
"attachmentId": "<string>",
"fileName": "<string>",
"uploadUrl": "<string>",
"expiresAt": "<string>"
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": "<string>",
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": null,
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": "<string>",
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": null,
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}Authorizations
Authentication token for API access
Body
Request to add one or more attachments to a document (invoice or credit note). Returns presigned upload URLs.
Show child attributes
Show child attributes
Response
OK
Billing's response envelope: the platform's (message.text + message.token,
content.data + content.metadata, validationIssues) plus the fields billing
sent before it (PRODLAUNCH-416). Those are deprecated, removed on 31 December 2026, and are
projections of their replacements so the two cannot disagree.
What happened, as English text and a stable snake_case token to translate from.
Show child attributes
Show child attributes
Show child attributes
Show child attributes
Show child attributes
Show child attributes
Deprecated: the same issues as validationIssues (reasonText is reason, reasonId is reasonToken, reasonParameters is reasonTokenArguments). Read validationIssues; this will be removed.
Show child attributes
Show child attributes
Deprecated: the same values as content.metadata. Read that; this will be removed.
Show child attributes
Show child attributes
Was this page helpful?
curl --request POST \
--url https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments \
--header 'Content-Type: application/json' \
--header 'X-Auth-Token: <api-key>' \
--data '
{
"attachments": [
{
"fileName": "<string>",
"contentType": "<string>",
"fileSize": 123
}
]
}
'import requests
url = "https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments"
payload = { "attachments": [
{
"fileName": "<string>",
"contentType": "<string>",
"fileSize": 123
}
] }
headers = {
"X-Auth-Token": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'X-Auth-Token': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({attachments: [{fileName: '<string>', contentType: '<string>', fileSize: 123}]})
};
fetch('https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments', 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.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments",
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([
'attachments' => [
[
'fileName' => '<string>',
'contentType' => '<string>',
'fileSize' => 123
]
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"X-Auth-Token: <api-key>"
],
]);
$response = curl_exec($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.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments"
payload := strings.NewReader("{\n \"attachments\": [\n {\n \"fileName\": \"<string>\",\n \"contentType\": \"<string>\",\n \"fileSize\": 123\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("X-Auth-Token", "<api-key>")
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.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments")
.header("X-Auth-Token", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"attachments\": [\n {\n \"fileName\": \"<string>\",\n \"contentType\": \"<string>\",\n \"fileSize\": 123\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.sandbox.flowpayroll.ai/v1/billing/clients/{clientId}/credit-notes/{creditNoteId}/attachments")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["X-Auth-Token"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"attachments\": [\n {\n \"fileName\": \"<string>\",\n \"contentType\": \"<string>\",\n \"fileSize\": 123\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": [
{
"attachmentId": "<string>",
"fileName": "<string>",
"uploadUrl": "<string>",
"expiresAt": "<string>"
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": "<string>",
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": null,
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": "<string>",
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}{
"message": {
"token": "<string>",
"text": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": null
}
],
"textId": "<string>",
"textParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": null,
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": null
}
]
}
],
"errors": [
{
"field": "<string>",
"reasonText": "<string>",
"reasonId": "<string>",
"reasonParameters": [
{
"key": "<string>",
"value": "<string>"
}
]
}
],
"metadata": {
"dateFormat": "<string>",
"dateTimeFormat": "<string>",
"paginationToken": "<string>"
}
}