> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://api-docs.papertracc.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://api-docs.papertracc.com/_mcp/server. # Amend Bill PATCH https://api.papertracc.com/v1/bills/{id}/amend Content-Type: application/json Moves a bill into amendment flow. `reason` is optional unless project configuration requires it. Reference: https://api-docs.papertracc.com/papertracc/sales/bills/amend-bill ## OpenAPI Specification ```yaml openapi: 3.1.0 info: title: collection version: 1.0.0 paths: /bills/{id}/amend: patch: operationId: Amend Bill summary: Amend Bill description: >- Moves a bill into amendment flow. `reason` is optional unless project configuration requires it. tags: - bills parameters: - name: id in: path required: true schema: type: string - name: Authorization in: header description: Bearer authentication required: true schema: type: string responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/Sales_Bills_Amend Bill_Response_200' requestBody: content: application/json: schema: type: object properties: reason: type: string required: - reason servers: - url: https://api.papertracc.com/v1 description: Production - url: https://api.papertracc.com/rc-1 description: Release Candidate 1 components: schemas: BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataItemsItems: type: object properties: rate: type: integer amount: type: integer detail: type: string tax_id: type: string format: uuid quantity: type: integer account_id: type: string format: uuid inventory_id: type: string format: uuid currency_code: type: string required: - rate - amount - detail - tax_id - quantity - account_id - inventory_id - currency_code title: BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataItemsItems BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataVendor: type: object properties: id: type: string format: uuid display_name: type: string required: - id - display_name title: BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataVendor BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataAdjustmentsItems: type: object properties: name: type: string type: type: string value: type: number format: double amount: type: integer operation: type: string account_id: type: string format: uuid required: - name - type - value - amount - operation - account_id title: >- BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataAdjustmentsItems BillsIdAmendPatchResponsesContentApplicationJsonSchemaData: type: object properties: id: type: string format: uuid items: type: array items: $ref: >- #/components/schemas/BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataItemsItems amount: type: string status: type: string vendor: $ref: >- #/components/schemas/BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataVendor approval: type: integer due_date: type: string format: date-time approvals: type: array items: description: Any type bill_date: type: string format: date-time documents: type: array items: description: Any type account_id: type: string format: uuid created_at: type: string format: date-time project_id: type: string adjustments: type: array items: $ref: >- #/components/schemas/BillsIdAmendPatchResponsesContentApplicationJsonSchemaDataAdjustmentsItems prepared_by: type: string currency_code: type: string exchange_rate: type: string bill_reference: type: string journal_status: type: string journal_entry_id: description: Any type required: - id - items - amount - status - vendor - approval - due_date - approvals - bill_date - documents - account_id - created_at - project_id - adjustments - prepared_by - currency_code - exchange_rate - bill_reference - journal_status title: BillsIdAmendPatchResponsesContentApplicationJsonSchemaData Sales_Bills_Amend Bill_Response_200: type: object properties: data: $ref: >- #/components/schemas/BillsIdAmendPatchResponsesContentApplicationJsonSchemaData status: type: boolean message: type: string required: - data - status - message title: Sales_Bills_Amend Bill_Response_200 securitySchemes: bearerAuth: type: http scheme: bearer identityAuth: type: apiKey in: header name: identity description: The identity for the active project. ``` ## Examples **Request** ```json { "reason": "Need to correct due date" } ``` **Response** ```json { "data": { "id": "45c6e26d-e132-4548-8e2e-5bfc467cf94a", "items": [ { "rate": 50000, "amount": 500000, "detail": "Consulting hours", "tax_id": "78c68f6d-d734-4822-9a6c-73f517a0e5c1", "quantity": 10, "account_id": "d037d299-3029-4dc7-8e72-172f80f23c4f", "inventory_id": "55a40b4d-a23a-49aa-a417-828913e9a5c8", "currency_code": "NGN" } ], "amount": "250000.00", "status": "PENDING", "vendor": { "id": "0cb2d1a5-2f50-43a1-8c3f-df06f998ef51", "display_name": "Global Softworks" }, "approval": 0, "due_date": "2026-07-18T10:00:00Z", "approvals": [], "bill_date": "2026-06-18T10:00:00Z", "documents": [], "account_id": "d037d299-3029-4dc7-8e72-172f80f23c4f", "created_at": "2026-06-18T10:00:00Z", "project_id": "spruce-demo", "adjustments": [ { "name": "VAT", "type": "PERCENTAGE_RATE", "value": 7.5, "amount": 37500, "operation": "ADDITION", "account_id": "2b0d1461-e52e-4a1a-a69c-11801431c2c9" } ], "prepared_by": "user-token-hash", "currency_code": "NGN", "exchange_rate": "1.00", "bill_reference": "BILL-0001", "journal_status": "UNPOSTED" }, "status": true, "message": "Successfully amended bill" } ``` **SDK Code** ```python Sales_Bills_Amend Bill_example import requests url = "https://api.papertracc.com/v1/bills/id/amend" payload = { "reason": "Need to correct due date" } headers = { "Authorization": "Bearer ", "Content-Type": "application/json" } response = requests.patch(url, json=payload, headers=headers) print(response.json()) ``` ```javascript Sales_Bills_Amend Bill_example const url = 'https://api.papertracc.com/v1/bills/id/amend'; const options = { method: 'PATCH', headers: {Authorization: 'Bearer ', 'Content-Type': 'application/json'}, body: '{"reason":"Need to correct due date"}' }; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go Sales_Bills_Amend Bill_example package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "https://api.papertracc.com/v1/bills/id/amend" payload := strings.NewReader("{\n \"reason\": \"Need to correct due date\"\n}") req, _ := http.NewRequest("PATCH", url, payload) req.Header.Add("Authorization", "Bearer ") req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body)) } ``` ```ruby Sales_Bills_Amend Bill_example require 'uri' require 'net/http' url = URI("https://api.papertracc.com/v1/bills/id/amend") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Patch.new(url) request["Authorization"] = 'Bearer ' request["Content-Type"] = 'application/json' request.body = "{\n \"reason\": \"Need to correct due date\"\n}" response = http.request(request) puts response.read_body ``` ```java Sales_Bills_Amend Bill_example import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.patch("https://api.papertracc.com/v1/bills/id/amend") .header("Authorization", "Bearer ") .header("Content-Type", "application/json") .body("{\n \"reason\": \"Need to correct due date\"\n}") .asString(); ``` ```php Sales_Bills_Amend Bill_example request('PATCH', 'https://api.papertracc.com/v1/bills/id/amend', [ 'body' => '{ "reason": "Need to correct due date" }', 'headers' => [ 'Authorization' => 'Bearer ', 'Content-Type' => 'application/json', ], ]); echo $response->getBody(); ``` ```csharp Sales_Bills_Amend Bill_example using RestSharp; var client = new RestClient("https://api.papertracc.com/v1/bills/id/amend"); var request = new RestRequest(Method.PATCH); request.AddHeader("Authorization", "Bearer "); request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", "{\n \"reason\": \"Need to correct due date\"\n}", ParameterType.RequestBody); IRestResponse response = client.Execute(request); ``` ```swift Sales_Bills_Amend Bill_example import Foundation let headers = [ "Authorization": "Bearer ", "Content-Type": "application/json" ] let parameters = ["reason": "Need to correct due date"] as [String : Any] let postData = JSONSerialization.data(withJSONObject: parameters, options: []) let request = NSMutableURLRequest(url: NSURL(string: "https://api.papertracc.com/v1/bills/id/amend")! as URL, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10.0) request.httpMethod = "PATCH" request.allHTTPHeaderFields = headers request.httpBody = postData as Data let session = URLSession.shared let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in if (error != nil) { print(error as Any) } else { let httpResponse = response as? HTTPURLResponse print(httpResponse) } }) dataTask.resume() ```