> For the complete documentation index, see [llms.txt](https://invoice4u.gitbook.io/invoice4u-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://invoice4u.gitbook.io/invoice4u-docs/documents/get-document.md). # Get a Single Document Three lookups for fetching one document. All are scoped to the authenticated organization. ## Get by ID — `GetDocument` | | | | ---------- | -------------- | | **Method** | `POST` | | **Path** | `/GetDocument` | ```json { "docId": "7f6a2c1e-8b4d-4f2a-9c3e-0d1e2f3a4b5c", "token": "" } ``` `docId` is the document GUID (the `ID` returned on creation). Returns the `Document`, or `ApiDocumentDoesNotExistForUser` (321) if it belongs to another organization; `null` on a malformed GUID. ## Get by number — `GetDocumentByNumber` | | | | ---------- | ---------------------- | | **Method** | `POST` | | **Path** | `/GetDocumentByNumber` | ```json { "docNumber": 20260123, "documentType": 3, "token": "" } ``` Document numbers are sequential **per type**, so the type is required. GET variant: `/GetDocumentByNumberREST`. ## Get by API identifier — `GetDocumentByApiIdentifier` | | | | ---------- | ----------------------------- | | **Method** | `POST` | | **Path** | `/GetDocumentByApiIdentifier` | ```json { "apiIdentifier": "order-10045-invoice", "docType": 1, "token": "" } ``` Fetch a document by your idempotency key — the recommended recovery path after a timed-out create. GET variant: `/GetDocumentByApiIdentifierREST`. Existence check only: `IsDocumentExistsByApiIdentifier` → `{ "apiIdentifier": "...", "token": "..." }` → boolean. ## Example response All three return the full [Document object](/invoice4u-docs/documents/document-object.md): ```json { "GetDocumentResult": { "ID": "7f6a2c1e-8b4d-4f2a-9c3e-0d1e2f3a4b5c", "DocumentNumber": 20260123, "DocumentType": 3, "Subject": "Monthly subscription", "Total": 117.0, "StatusID": 2, "Errors": [] } } ``` ## Errors | Error (ID) | Meaning | | -------------------------------------- | ----------------------------------------- | | `UnauthorizedUser` (80) | Invalid token. | | `ApiDocumentDoesNotExistForUser` (321) | Document belongs to another organization. | ## Try it ## POST /GetDocument > Get document by GUID ```json {"openapi":"3.0.3","info":{"title":"Invoice4U API","version":"1.0.0"},"tags":[{"name":"Documents","description":"Create and retrieve documents (invoices, receipts, etc.)."}],"servers":[{"url":"https://api.invoice4u.co.il/Services/ApiService.svc","description":"Production"},{"url":"https://apiqa.invoice4u.co.il/Services/ApiService.svc","description":"QA (staging)"}],"paths":{"/GetDocument":{"post":{"tags":["Documents"],"operationId":"GetDocument","summary":"Get document by GUID","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["docId","token"],"properties":{"docId":{"type":"string","format":"uuid"},"token":{"type":"string"}}}}}},"responses":{"200":{"description":"The document.","content":{"application/json":{"schema":{"type":"object","properties":{"GetDocumentResult":{"$ref":"#/components/schemas/Document"}}}}}}}}}},"components":{"schemas":{"Document":{"allOf":[{"$ref":"#/components/schemas/CommonObject"},{"type":"object","required":["DocumentType"],"properties":{"ID":{"type":"string","format":"uuid","readOnly":true},"DocumentNumber":{"type":"integer","format":"int64","readOnly":true,"description":"Legal sequential number, per type."},"DocumentType":{"type":"integer","description":"1 Invoice, 2 Receipt, 3 InvoiceReceipt, 4 InvoiceCredit, 5 ProformaInvoice, 6 InvoiceOrder, 7 InvoiceQuote, 8 InvoiceShip, 9 Deposits, 10 SupplierInvoiceToInventory, 13 PurchaseOrder.","enum":[1,2,3,4,5,6,7,8,9,10,13]},"Subject":{"type":"string","nullable":true},"ClientID":{"type":"integer","nullable":true,"description":"Existing customer ID. 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resolved against configured credit companies."},"CreditCardType":{"type":"integer","nullable":true},"PaymentNumber":{"type":"string","nullable":true,"description":"Check number / last 4 card digits."},"BankName":{"type":"string","nullable":true},"BranchName":{"type":"string","nullable":true},"AccountNumber":{"type":"string","nullable":true},"PayerID":{"type":"string","nullable":true},"ExpirationDate":{"type":"string","nullable":true},"PaymentTypeOtherId":{"type":"integer","description":"Sub-type when PaymentType=7 (Other)."},"PaymentTypeLiteral":{"type":"string","nullable":true}}},"AssociatedEmail":{"type":"object","required":["Mail"],"properties":{"Mail":{"type":"string","format":"email"},"IsUserMail":{"type":"boolean","description":"true marks the copy sent to the account owner."},"ClientId":{"type":"integer","nullable":true},"IsSendDoc":{"type":"boolean","nullable":true}}}}}} ``` ## Get document by number and type > Document numbers are sequential per type, so documentType is required. ```json {"openapi":"3.0.3","info":{"title":"Invoice4U API","version":"1.0.0"},"tags":[{"name":"Documents","description":"Create and retrieve documents (invoices, receipts, etc.)."}],"servers":[{"url":"https://api.invoice4u.co.il/Services/ApiService.svc","description":"Production"},{"url":"https://apiqa.invoice4u.co.il/Services/ApiService.svc","description":"QA (staging)"}],"paths":{"/GetDocumentByNumber":{"post":{"tags":["Documents"],"operationId":"GetDocumentByNumber","summary":"Get document by number and type","description":"Document numbers are sequential per type, so documentType is required.","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["docNumber","documentType","token"],"properties":{"docNumber":{"type":"integer"},"documentType":{"type":"integer"},"token":{"type":"string"}}}}}},"responses":{"200":{"description":"The document.","content":{"application/json":{"schema":{"type":"object","properties":{"GetDocumentByNumberResult":{"$ref":"#/components/schemas/Document"}}}}}}}}}},"components":{"schemas":{"Document":{"allOf":[{"$ref":"#/components/schemas/CommonObject"},{"type":"object","required":["DocumentType"],"properties":{"ID":{"type":"string","format":"uuid","readOnly":true},"DocumentNumber":{"type":"integer","format":"int64","readOnly":true,"description":"Legal sequential number, per type."},"DocumentType":{"type":"integer","description":"1 Invoice, 2 Receipt, 3 InvoiceReceipt, 4 InvoiceCredit, 5 ProformaInvoice, 6 InvoiceOrder, 7 InvoiceQuote, 8 InvoiceShip, 9 Deposits, 10 SupplierInvoiceToInventory, 13 PurchaseOrder.","enum":[1,2,3,4,5,6,7,8,9,10,13]},"Subject":{"type":"string","nullable":true},"ClientID":{"type":"integer","nullable":true,"description":"Existing customer ID. 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