Invoice Submission (Single)

Submit invoices to KSeF — JSON, raw XML, and synchronous submission with automatic session management.

Submission Methods Overview

#	Endpoint	Input	Mode	Response	Best for
1	`POST /api/invoices/submit-sync`	JSON	Sync	201 + reference	Simple integrations, real-time
2	`POST /api/invoices/submit-raw-xml`	XML	Sync	201 + reference	ERP with own XML generation
3	`POST /api/invoices`	JSON	Async (Kafka)	202 + invoice_id	High volume, fire-and-forget
4	`POST /api/invoices/queue-raw-xml`	XML	Async (Kafka)	202 + invoice_id	ERP with own XML, high volume

Sync = Gateway sends to KSeF, waits for reference number, returns it in response.
Async = Gateway queues to Kafka, returns immediately. Worker processes in background. Poll for status.

Session management is automatic. The Gateway opens/reuses KSeF sessions transparently. You don't need to call Sessions endpoints before submitting — only ensure a credential exists (Tokens & Certificates).

JSON Invoice Schema (InvoiceCreate)

Used by endpoints #1 and #3. The Gateway generates FA(3) XML from this JSON.

{
  "company_id": "22919080-f3fe-4aff-8d71-f6493afc956a",
  "invoice_type_code": "VAT",
  "invoice_number": "FV/2026/03/001",
  "invoice_date": "2026-03-14",
  "sale_date": "2026-03-14",
  "seller": {
    "nip": "8133793363",
    "name": "Bizneto Mirosław Dykiel",
    "street": "Mieszka I 38",
    "city": "Rzeszów",
    "postal_code": "35-308",
    "country": "PL"
  },
  "buyer": {
    "nip": "8132952463",
    "name": "Test Buyer Sp. z o.o.",
    "street": "ul. Testowa 1",
    "city": "Warszawa",
    "postal_code": "00-001",
    "country": "PL"
  },
  "items": [{
    "position": 1,
    "name": "Usługa integracji KSeF",
    "quantity": "1",
    "unit": "szt",
    "unit_price": "5000.00",
    "vat_rate": "23",
    "net_amount": "5000.00",
    "vat_amount": "1150.00",
    "gross_amount": "6150.00"
  }],
  "summary": {
    "net_total": "5000.00",
    "vat_total": "1150.00",
    "gross_total": "6150.00"
  },
  "tax_breakdowns": [{
    "name": "PTU",
    "category": "S",
    "percent": "23",
    "taxable_base": "5000.00",
    "tax_amount": "1150.00"
  }],
  "currency": "PLN"
}

Required Fields

Field	Type	Maps to XML	Description
`company_id`	UUID	—	Company UUID (must match seller NIP)
`invoice_type_code`	string	`Fa/RodzajFaktury`	`VAT`, `KOR`, `ZAL`, `ROZ`, `UPR`, `KOR_ZAL`, `KOR_ROZ`
`invoice_number`	string	`Fa/P_2`	Invoice number
`invoice_date`	date	`Fa/P_1`	Issue date (YYYY-MM-DD)
`sale_date`	date	`Fa/P_6`	Sale/delivery date
`seller`	Party	`Podmiot1`	Seller info (NIP must match company)
`buyer`	Party	`Podmiot2`	Buyer info
`items[]`	array	`Fa/FaWiersz`	Line items (min 1)
`summary`	object	`Fa/P_13_, P_14_, P_15`	Totals
`tax_breakdowns[]`	array	`Fa/P_13_, P_14_`	VAT breakdown by rate

Optional Fields

Field	Type	Maps to XML	Description
`currency`	string	`Fa/KodWaluty`	ISO 4217, default: `PLN`
`exchange_rate`	number	`Fa/KursWaluty`	Required if non-PLN currency
`payment_date`	date	`Fa/TerminPlatnosci/Termin`	Payment due date
`description`	string	`Stopka/Informacje/StopkaFaktury`	Footer text (max 3500 chars)
`type_operation`	string	—	`services` (default) or `goods`
`amended_ksef_number`	string	`Fa/NrKSeFFaKorygowanej`	For corrections (KOR)
`amended_date`	date	—	Original invoice date
`amended_number`	string	—	Original invoice number
`amend_type`	string	`Fa/P_15ZK`	Correction effect: `1`=original date, `2`=correction date, `3`=other

Party (seller/buyer)

Field	Type	Required	Description
`nip`	string	✅	10-digit Polish NIP
`name`	string	✅	Legal name
`street`	string	✅	Street + number
`city`	string	✅	City
`postal_code`	string	✅	Format: `XX-XXX`
`country`	string	❌	ISO alpha-2, default `PL`

Line Item

Field	Type	Required	Maps to	Description
`position`	int	✅	`NrWierszaFa`	Line number (from 1)
`name`	string	✅	`P_7`	Item/service description
`quantity`	decimal	✅	`P_8A`	Quantity
`unit`	string	✅	`P_8B`	Unit: szt, godz, kg, m2...
`unit_price`	decimal	✅	`P_9A`	Net unit price
`vat_rate`	string	✅	`P_12`	`23`, `8`, `5`, `0`, `zw`, `np`, `oo`
`net_amount`	decimal	✅	`P_11`	Net total for line
`vat_amount`	decimal	✅	`P_11Vat`	VAT for line
`gross_amount`	decimal	✅	—	Gross total for line
`pkwiu`	string	❌	`PKWiU`	Classification code
`cn`	string	❌	`CN`	Combined Nomenclature

Tax Breakdown

Field	Type	Required	Description
`category`	string	✅	`S`=Standard, `E`=Exempt, `Z`=Zero, `O`=Reverse charge, `AE`=RC EU
`percent`	decimal	✅	VAT rate (23, 8, 5, 0)
`taxable_base`	decimal	✅	Net amount for this rate
`tax_amount`	decimal	✅	VAT amount for this rate
`name`	string	❌	Default: `PTU`
`comment`	string	❌	Exemption reason etc.

VAT Rate Mapping

Rate	`vat_rate`	`category`	XML net field	XML VAT field
23%	`23`	`S`	`P_13_1`	`P_14_1`
8%	`8`	`S`	`P_13_2`	`P_14_2`
5%	`5`	`S`	`P_13_3`	`P_14_3`
0% domestic	`0`	`Z`	`P_13_6`	—
Exempt	`zw`	`E`	`P_13_7`	—
Reverse charge	`np`	`O` / `AE`	`P_13_9`	—

Endpoint #1: Submit Sync (JSON)

POST /api/invoices/submit-sync
Authorization: Bearer {token}
Content-Type: application/json

Request: Full InvoiceCreate JSON (see section 2).

Response (201):

{
  "invoice_id": "698ac8e1-2355-4e08-bda1-b29054263fee",
  "company_id": "22919080-f3fe-4aff-8d71-f6493afc956a",
  "status": "sending",
  "invoice_type_code": "VAT",
  "invoice_number": "FV/TEST/2026/03/001",
  "invoice_date": "2026-03-14",
  "sale_date": "2026-03-14",
  "created_at": "2026-03-14T09:44:27.189297Z",
  "sent_at": "2026-03-14T09:44:27.353080Z",
  "ksef_reference_number": "20260314-EE-21715A2000-D05678D784-5A",
  "fingerprint": "a7bd1e6d37f5a07bd18f9ee5f16388e4cc731bd9fe57f2c90b500ecb0887c8e3",
  "identifier": "https://ksef-demo.mf.gov.pl/client-app/invoice/8133793363/2026-03-14/p70ebTf1oHvRj57l8WOI5MxzG9n...",
  "qr_code": "iVBORw0KGgo...(base64 PNG)",
  "qr_label": "OFFLINE",
  "xml_url": "/api/invoices/698ac8e1-.../xml",
  "qr_url": "/api/invoices/698ac8e1-.../qr"
}

What happens: Gateway validates JSON → generates FA(3) XML → opens/reuses KSeF session → encrypts with AES-256-CBC → sends to KSeF → returns reference number. Background worker then polls for KSeF number.

Endpoint #2: Submit Raw XML (Sync)

POST /api/invoices/submit-raw-xml
Authorization: Bearer {token}
Content-Type: application/json

Request:

{
  "company_id": "22919080-f3fe-4aff-8d71-f6493afc956a",
  "xml_content": "<?xml version='1.0' encoding='UTF-8'?><Faktura xmlns=\"http://crd.gov.pl/wzor/2025/06/25/13775/\">...</Faktura>"
}

Response (201):

{
  "status": "submitted",
  "invoice_id": "1d69f57c-3c5e-4928-840c-9920e787adcc",
  "ksef_response": {
    "referenceNumber": "20260314-EE-220FD3B000-D0580027F0-3D"
  },
  "xml_hash": "f5edddd131138c0cdb2876416e6ab878ffd99b21071b225462cd9a4ae7365123",
  "xml_size": 1919
}

What happens: Gateway parses XML (extracts P_2, P_1, P_6) → saves to DB → opens/reuses session → encrypts → sends to KSeF. Client is responsible for XML validity.

Endpoint #3: Submit Async JSON (Kafka)

POST /api/invoices
Authorization: Bearer {token}
Content-Type: application/json

Request: Same InvoiceCreate JSON as submit-sync.

Response (202 Accepted):

{
  "invoice_id": "5bf577a5-3335-4c63-a5e0-5d8248b10c67",
  "status": "queued",
  "invoice_number": "FV/ASYNC/2026/03/001"
}

Returns immediately. Invoice queued to Kafka topic invoice.submit. Worker picks it up, processes identically to sync. Poll GET /api/invoices/{id} for final status.

Endpoint #4: Queue Raw XML Async (Kafka)

POST /api/invoices/queue-raw-xml
Authorization: Bearer {token}
Content-Type: application/json

Request: Same RawXMLRequest as submit-raw-xml.

Response (202):

{
  "status": "queued",
  "invoice_id": "73591981-527c-49fb-bb05-e481f358c75d",
  "invoice_number": "FV/ASYNC-XML/2026/03/001",
  "message": "Invoice queued for async submission to KSeF. Poll GET /invoices/{invoice_id} for status."
}

Invoice Lifecycle

              ┌─────────────────────────────────────────────────┐
              │              SUBMISSION FLOW                     │
              │                                                 │
   JSON ──┐   │  ┌────────┐   ┌─────────┐   ┌────────────┐    │
   sync   ├──▶│  │SENDING │──▶│  KSeF    │──▶│REGISTERED  │    │
   XML    ┘   │  └────────┘   │  encrypt │   │ksef_number │    │
              │               │  + send  │   └────────────┘    │
   JSON ──┐   │  ┌────────┐  └────┬─────┘   ┌────────────┐    │
   async  ├──▶│  │QUEUED  │───────┘    ┌───▶│  FAILED    │    │
   XML    ┘   │  │(Kafka) │            │    │error_message│    │
              │  └────────┘            │    └────────────┘    │
              │                        │                       │
   incoming ──▶  ┌────────┐            │    ┌────────────┐    │
   webhook     │  │ DRAFT  │───submit──┘    │ CANCELLED  │    │
              │  └────────┘                 └────────────┘    │
              └─────────────────────────────────────────────────┘

Status	Description	Final?	Has ksef_number?
`draft`	Created via incoming webhook (auto_submit=false)	❌	❌
`queued`	In Kafka queue, waiting for Worker	❌	❌
`sending`	Worker sending to KSeF	❌	❌
`registered`	Registered in KSeF	✅	✅
`failed`	Error (check `error_message`)	✅	❌
`cancelled`	Cancelled/deleted before registration	✅	❌

Retrieval Endpoints

8.1 Get Invoice

GET /api/invoices/{invoice_id}
Authorization: Bearer {token}

Response (200):

{
  "invoice_id": "4fc06985-2b02-4389-8d89-40a9d1333883",
  "invoice_number": "FV/QR-TEST/2026/03/001",
  "status": "registered",
  "ksef_number": "8133793363-20260314-56B828800000-62",
  "ksef_url": "https://qr-demo.ksef.mf.gov.pl/client-app/invoice/.../verify-download",
  "identifier": "https://qr-demo.ksef.mf.gov.pl/invoice/8133793363/14-03-2026/Q6MltDPzEhCc...",
  "qr_label": "8133793363-20260314-56B828800000-62",
  "fingerprint": "43a325b433f312109ce02568c9844d07d1cff609745db61f168913136aa62fd4",
  "xml_url": "/api/invoices/4fc06985-.../xml",
  "qr_url": "/api/invoices/4fc06985-.../qr",
  "upo_url": "/api/invoice-status/4fc06985-.../download-upo",
  "created_at": "2026-03-14T11:19:58.885183Z",
  "sent_at": "2026-03-14T11:20:00.794107Z",
  "registered_at": "2026-03-14T11:20:14.107706Z"
}

8.2 List Invoices

GET /api/invoices?company_id={id}&invoice_status={status}&skip={n}&limit={n}
Authorization: Bearer {token}

Parameter	Type	Description
`company_id`	UUID	Filter by company
`invoice_status`	string	`draft`, `queued`, `sending`, `registered`, `failed`, `cancelled`
`skip`	int	Offset for pagination
`limit`	int	Results per page

Response (200):

{
  "total": 92,
  "skip": 0,
  "limit": 3,
  "invoices": [
    { "invoice_id": "...", "invoice_number": "INC/2026/03/002", "status": "registered", "ksef_number": "..." },
    { "invoice_id": "...", "invoice_number": "FV/WEBHOOK/2026/03/001", "status": "registered", "ksef_number": "..." }
  ]
}

8.3 Get Invoice XML

GET /api/invoices/{invoice_id}/xml
Authorization: Bearer {token}

Returns raw FA(3) XML (Content-Type: application/xml).

8.4 Get QR Code

GET /api/invoices/{invoice_id}/qr
Authorization: Bearer {token}

Returns PNG image (Content-Type: image/png). QR encodes the identifier URL.

8.5 Get UPO

GET /api/invoices/{invoice_id}/upo
Authorization: Bearer {token}

Returns UPO XML (Urzędowe Poświadczenie Odbioru — Official Receipt).

Invoice Actions

9.1 Submit Draft to KSeF

For invoices created via incoming webhook with auto_submit: false.

POST /api/invoices/{invoice_id}/submit
Authorization: Bearer {token}

Response (202): Invoice moves from draft → queued → processing pipeline.

Error (400): "Cannot submit invoice with status 'cancelled'. Only DRAFT invoices can be submitted."

9.2 Retry Failed Invoice

POST /api/invoices/{invoice_id}/retry
Authorization: Bearer {token}

Response (202): Invoice re-queued for submission.

Error (409): "Invoice already registered in KSeF: 8133793363-20260314-56B828800000-62"

9.3 Cancel / Delete Invoice

DELETE /api/invoices/{invoice_id}?hard={true|false}
Authorization: Bearer {token}

Parameter	Default	Description
`hard`	`false`	`false` = soft delete (status → cancelled), `true` = physical delete

Response: 204 No Content

Registered invoices can be cancelled in the Gateway database (status → cancelled) but cannot be un-registered from KSeF. The KSeF number remains valid. Use corrective invoices (KOR) for corrections.

FA(3) XML Structure (for raw XML endpoints)

Namespace (CRITICAL)

<?xml version="1.0" encoding="UTF-8"?>
<Faktura xmlns="http://crd.gov.pl/wzor/2025/06/25/13775/"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:xsd="http://www.w3.org/2001/XMLSchema">

Wrong namespace = silent rejection. Always use 2025/06/25/13775/.

Complete Tested Example

<?xml version="1.0" encoding="UTF-8"?>
<Faktura xmlns="http://crd.gov.pl/wzor/2025/06/25/13775/"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Naglowek>
    <KodFormularza kodSystemowy="FA (3)" wersjaSchemy="1-0E">FA</KodFormularza>
    <WariantFormularza>3</WariantFormularza>
    <DataWytworzeniaFa>2026-03-14T10:00:00Z</DataWytworzeniaFa>
    <SystemInfo>KSeF API Gateway v1.0.0</SystemInfo>
  </Naglowek>
  <Podmiot1>
    <DaneIdentyfikacyjne>
      <NIP>8133793363</NIP>
      <Nazwa>Bizneto Mirosław Dykiel</Nazwa>
    </DaneIdentyfikacyjne>
    <Adres>
      <KodKraju>PL</KodKraju>
      <AdresL1>Mieszka I 38</AdresL1>
      <AdresL2>35-308 Rzeszów</AdresL2>
    </Adres>
  </Podmiot1>
  <Podmiot2>
    <DaneIdentyfikacyjne>
      <NIP>8132952463</NIP>
      <Nazwa>Test Buyer Sp. z o.o.</Nazwa>
    </DaneIdentyfikacyjne>
    <Adres>
      <KodKraju>PL</KodKraju>
      <AdresL1>ul. Testowa 1</AdresL1>
      <AdresL2>00-001 Warszawa</AdresL2>
    </Adres>
    <JST>2</JST>
    <GV>2</GV>
  </Podmiot2>
  <Fa>
    <KodWaluty>PLN</KodWaluty>
    <P_1>2026-03-14</P_1>
    <P_2>FV/2026/03/001</P_2>
    <P_6>2026-03-14</P_6>
    <P_13_1>2500.00</P_13_1>
    <P_14_1>575.00</P_14_1>
    <P_15>3075.00</P_15>
    <Adnotacje>
      <P_16>2</P_16>
      <P_17>2</P_17>
      <P_18>2</P_18>
      <P_18A>2</P_18A>
      <Zwolnienie><P_19N>1</P_19N></Zwolnienie>
      <NoweSrodkiTransportu><P_22N>1</P_22N></NoweSrodkiTransportu>
      <P_23>2</P_23>
      <PMarzy><P_PMarzyN>1</P_PMarzyN></PMarzy>
    </Adnotacje>
    <RodzajFaktury>VAT</RodzajFaktury>
    <FaWiersz>
      <NrWierszaFa>1</NrWierszaFa>
      <P_7>Integracja API KSeF - pakiet Enterprise</P_7>
      <P_8A>szt</P_8A>
      <P_8B>1</P_8B>
      <P_9A>2500.00</P_9A>
      <P_11>2500.00</P_11>
      <P_11Vat>575.00</P_11Vat>
      <P_12>23</P_12>
    </FaWiersz>
  </Fa>
</Faktura>

XML Adnotacje Section (REQUIRED)

Missing <Adnotacje> = rejection. Default values for a standard VAT invoice:

<Adnotacje>
  <P_16>2</P_16>           <!-- cash method: 1=yes, 2=no -->
  <P_17>2</P_17>           <!-- self-billing: 1=yes, 2=no -->
  <P_18>2</P_18>           <!-- reverse charge: 1=yes, 2=no -->
  <P_18A>2</P_18A>         <!-- split payment: 1=yes, 2=no -->
  <Zwolnienie><P_19N>1</P_19N></Zwolnienie>
  <NoweSrodkiTransportu><P_22N>1</P_22N></NoweSrodkiTransportu>
  <P_23>2</P_23>           <!-- margin invoice: 1=yes, 2=no -->
  <PMarzy><P_PMarzyN>1</P_PMarzyN></PMarzy>
</Adnotacje>

XML Size Limits

Limit	Value
Single invoice file	1 MB
With attachments (batch)	3 MB
DodatkowyOpis value	256 chars
StopkaFaktury text	3,500 chars

Common XML Validation Errors

Problem	Cause	Fix
Silent rejection	Wrong namespace	Use `2025/06/25/13775/`
Missing Adnotacje	Section required	Add full block with defaults
Empty `<Stopka/>`	Empty element not allowed	Remove or fill with content
`<FormaPlatnosci>`	Text instead of code	Use: `1`=cash, `2`=transfer, `6`=card
`<DodatkowyOpis>`	Missing child elements	Must have both `<Klucz>` + `<Wartosc>`
NIP mismatch	Podmiot1/NIP ≠ company.nip	Verify seller NIP

Invoice Type Codes

Code	XML `RodzajFaktury`	Description
`VAT`	`VAT`	Standard VAT invoice
`KOR`	`KOR`	Corrective invoice
`ZAL`	`ZAL`	Advance payment invoice
`ROZ`	`ROZ`	Settlement (final after advance)
`UPR`	`UPR`	Simplified invoice
`KOR_ZAL`	`KOR_ZAL`	Correction of advance
`KOR_ROZ`	`KOR_ROZ`	Correction of settlement

Error Responses

HTTP	Error	Cause
201	—	Invoice submitted (sync)
202	—	Invoice queued (async)
400	`Only DRAFT invoices can be submitted`	Trying to submit non-draft
400	XML parse error	Invalid XML in raw-xml endpoint
401	`Not authenticated`	Missing/expired JWT
403	`Access denied to this company`	Wrong tenant
409	`Invoice already registered in KSeF`	Retry on registered invoice
422	`Field required`	Missing required fields in JSON
422	Validation error	Totals don't match, invalid NIP, etc.
503	Circuit breaker open	KSeF system unavailable

Endpoint Reference

Submission

Method	Endpoint	Input	Mode	HTTP
POST	`/api/invoices/submit-sync`	JSON	Sync	201
POST	`/api/invoices/submit-raw-xml`	XML	Sync	201
POST	`/api/invoices`	JSON	Async	202
POST	`/api/invoices/queue-raw-xml`	XML	Async	202

Retrieval

Method	Endpoint	Description
GET	`/api/invoices`	List invoices (filter, paginate)
GET	`/api/invoices/{id}`	Get invoice details + all links
GET	`/api/invoices/{id}/xml`	Download FA(3) XML
GET	`/api/invoices/{id}/qr`	Download QR code (PNG)
GET	`/api/invoices/{id}/upo`	Download UPO (XML)

Actions

Method	Endpoint	Description
POST	`/api/invoices/{id}/submit`	Submit draft to KSeF
POST	`/api/invoices/{id}/retry`	Retry failed invoice
DELETE	`/api/invoices/{id}`	Cancel/delete invoice

Complete Examples

JSON Sync (simplest)

TOKEN="your_jwt_token"
BASE="https://demo.ksefapi.com"

curl -s -X POST "$BASE/api/invoices/submit-sync" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "company_id": "22919080-f3fe-4aff-8d71-f6493afc956a",
    "invoice_type_code": "VAT",
    "invoice_number": "FV/2026/03/001",
    "invoice_date": "2026-03-14",
    "sale_date": "2026-03-14",
    "seller": {"nip":"8133793363","name":"Bizneto","street":"Mieszka I 38","city":"Rzeszów","postal_code":"35-308"},
    "buyer": {"nip":"8132952463","name":"Buyer","street":"ul. Test 1","city":"Warszawa","postal_code":"00-001"},
    "items": [{"position":1,"name":"Service","quantity":"1","unit":"szt","unit_price":"1000.00","vat_rate":"23","net_amount":"1000.00","vat_amount":"230.00","gross_amount":"1230.00"}],
    "summary": {"net_total":"1000.00","vat_total":"230.00","gross_total":"1230.00"},
    "tax_breakdowns": [{"category":"S","percent":"23","taxable_base":"1000.00","tax_amount":"230.00"}],
    "currency": "PLN"
  }' | jq '{invoice_id, status, ksef_reference_number}'

Raw XML Async (fire-and-forget)

# Prepare XML in variable or file
XML='<?xml version="1.0" encoding="UTF-8"?><Faktura xmlns="http://crd.gov.pl/wzor/2025/06/25/13775/">...</Faktura>'

# Submit (escaping handled by jq)
jq -n --arg cid "22919080-..." --arg xml "$XML" '{company_id: $cid, xml_content: $xml}' | \
curl -s -X POST "$BASE/api/invoices/queue-raw-xml" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d @- | jq .

# Poll for result
INVOICE_ID="returned_id"
sleep 5
curl -s "$BASE/api/invoices/$INVOICE_ID" \
  -H "Authorization: Bearer $TOKEN" | jq '{status, ksef_number}'

Test Results (2026-03-14, demo.ksefapi.com)

Endpoint	Invoice	Status	KSeF Number	Time
submit-sync (JSON)	FV/TEST/.../001	✅ registered	`...4B85A3000000-CE`	~18s
submit-raw-xml (XML)	FV/RAW-XML/.../001	✅ registered	`...4CCA28C00000-32`	~12s
POST /invoices (JSON async)	FV/ASYNC/.../001	✅ registered	`...4FFAA8C00000-2E`	~6s
queue-raw-xml (XML async)	FV/ASYNC-XML/.../001	✅ registered	`...506CA3000000-DB`	~5s

All 4 submission methods verified end-to-end. 92 total invoices in tenant.

Next steps:

Batch submission → Batch Submission
Status polling, QR & UPO → Status, QR & UPO

Invoice Submission (Single)

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