sendInvoice

Live

Email the invoice PDF to the customer

Try this operation →Use Postman ↗See it tested live (6 calls)

Email the invoice PDF to the customer (to defaults to the customer’s email) with cc; any status, again whenever needed. Logged in the customer’s activity. Owner, admin and accountant. At most 5 sends per invoice an hour and 200 recipients (to plus cc) per shop a day (RATE_LIMITED). INVOICE_NOT_FOUND for an unknown id; CUSTOMER_EMAIL_MISSING without to for a customer with no email.

POST/graphqlapp audience

Who can call this. Owner, admin, accountant.

Headers

Required Optional

AuthorizationstringRequired
Bearer <token>, issued for this endpoint's audience. The token decides the shop and roles; nothing in the request body can change them.
Example: Bearer eyJhbGciOiJFZERTQSJ9…
Content-TypestringRequired
Always application/json. Only POST is accepted.
Example: application/json
Idempotency-KeystringRequired
A key you generate once per user action (a UUID). Retrying with the same key never applies the change twice.
Example: 0192f0c1-9b2a-7d40-8c3e-1f5a6b7c8d9e
X-Request-IdstringOptional
Your id for this request (8–128 characters of A–Z a–z 0–9 . _ : -). Echoed back in the response header and in every error, so you can quote it when reporting a problem. Core makes one if you send none.
Example: app-7f3c2a9e-checkout

Arguments

Required Optional

cc[String!]Optional
Up to 5 copy recipients.
Example: ["accounts@demo-customer.example"]
idID!Required
The invoice id.
Example: "0192f0c1-0000-7000-8000-000000b10001"
toStringOptional
Recipient email. Default: the customer’s email.

Returns

Required Optional

sendInvoiceInvoice!Required
Email the invoice PDF to the customer (to defaults to the customer’s email) with cc; any status, again whenever needed. Logged in the customer’s activity. Owner, admin and accountant. At most 5 sends per invoice an hour and 200 recipients (to plus cc) per shop a day (RATE_LIMITED). INVOICE_NOT_FOUND for an unknown id; CUSTOMER_EMAIL_MISSING without to for a customer with no email.
Show children
- createdAtString!Required
  UTC time the invoice was made.
- customerIdID!Required
  The customer (see customer).
- customerNameString!Required
  The customer’s name, so a list needs no second call.
- discountInt!Required
  Paise discount asked for. The amount applied is totals.discount.
- dueDateString!Required
  Payment due date, YYYY-MM-DD. Defaults to the issue date plus the customer’s payment terms.
- gstRateFloat!Required
  The GST percentage asked for. The rate applied is totals.gstRate.
- idID!Required
  Stable id (UUIDv7).
  Example: "0192f0c1-0000-7000-8000-000000b10001"
- issuedAtString!Required
  Invoice date, YYYY-MM-DD.
- jobCardIdIDOptional
  The job card this was raised from (see jobCard); null for a manual invoice.
- jobIdStringOptional
  The work-order number (WO-<n>, the order’s number) this bills; null for a manual invoice.
- lines[BillingLine!]!Required
  The priced operations, in the order given.
  Show children
  - amountFloat!Required
    Integer paise: (quantity × minutesPerPiece + setupMinutes) × ratePerMinute, rounded half up to a whole paisa. Computed by the server.
  - descriptionString!Required
    Free text for the customer; empty when none was given.
  - idID!Required
    Stable id (UUIDv7).
  - minutesPerPieceFloat!Required
    Machine minutes for one piece.
  - operationString!Required
    The operation priced, such as Turning.
  - ratePerMinuteInt!Required
    Paise per machine minute.
  - setupMinutesFloat!Required
    One-off machine minutes to set up, charged once per line.
- notesStringOptional
  Printed on the invoice.
- numberString!Required
  The invoice number. Assigned by the server; gaps never happen.
  Example: "DPW/26-27/0012"
- orderIdIDOptional
  The order this bills (see order).
- partString!Required
  Part name or number.
- paymentPaymentOptional
  Set once the invoice is paid; null before that.
  Show children
  - paidOnString!Required
    The day the money arrived, YYYY-MM-DD.
  - receivedAmountInt!Required
    Paise actually received: the invoice total less tdsAmount.
  - tdsAmountInt!Required
    Paise the customer deducted as tax at source; 0 when none.
  - tdsSectionStringOptional
    The income-tax section the deduction was made under, such as 194C.
- pdfFileAppFileReferenceOptional
  The invoice as a PDF (TAX INVOICE), rendered by the server on first ask and again whenever what it prints changes. Download it with POST /files/{id}/download-url. Ask on one invoice (invoice(id) or a mutation result): on a list it answers VALIDATION_FAILED. NOT_IMPLEMENTED when Core has no files bucket.
  Show children
  - idID!Required
    File id; obtain authorised download URL from files API.
  - kindStringOptional
    Document category.
  - nameString!Required
    Display filename.
  - sizeBytesFloat!Required
    Size in bytes, safe integer.
- poAmountIntOptional
  Paise: the amount on the customer’s PO, to compare against totals.total.
- quantityInt!Required
  Pieces billed.
- quoteIdIDOptional
  The quote this was priced from, if any (see quote).
- routeCardStringOptional
  The route card number printed on the job card.
- statusInvoiceStatus!Required
  NEW, OVERDUE or PAID. Derived from payment and dueDate.
  Example: "NEW"
  - NEWIssued, not paid, and not yet past its due date.
  - OVERDUENot paid and past its due date.
  - PAIDA payment has been recorded.
- totalsTotals!Required
  Subtotal, GST and total, all in paise, worked out by the server.
  Show children
  - cgstFloat!Required
    Central GST; 0 unless supply is INTRA.
  - discountFloat!Required
    The discount applied. Never more than the subtotal.
  - gstFloat!Required
    Total GST: cgst + sgst + igst.
  - gstRateFloat!Required
    The GST percentage applied; 0 when supply is NONE.
  - igstFloat!Required
    Integrated GST; 0 unless supply is INTER.
  - sgstFloat!Required
    State GST; 0 unless supply is INTRA.
  - subtotalFloat!Required
    Sum of the line amounts.
  - supplyGstSupply!Required
    Whether CGST + SGST or IGST applies.
    INTERDifferent states: IGST.
    INTRAShop and customer are in the same state: CGST + SGST.
    NONEThe shop has no GSTIN, so no GST is charged.
  - taxableFloat!Required
    Subtotal less discount.
  - totalFloat!Required
    Taxable plus GST.
- updatedAtString!Required
  UTC time of the last change.

Errors

Code	HTTP	When
`INVOICE_NOT_FOUND`	`404`	The id is unknown in this shop (another shop's invoice answers the same).
`FORBIDDEN`	`403`	Signed in, but the role or tenant does not allow the action.

Every error has the same body. See Errors.

Rate limit tier

Tier: per user. Over the limit you get RATE_LIMITED (HTTP 429) with a Retry-After header. See Response handling.