> ## Documentation Index > Fetch the complete documentation index at: https://docs.tangoanalytics.com/llms.txt > Use this file to discover all available pages before exploring further. # Retrieve Generic Statement Revisions > A `GET` request will list all of a Generic statement's revisions*.* If a response is null, the statement was deleted. *Response Body Structure* | Path | Type | Description | | --- | --- | --- | | `[].response` | `Generic Statement Model` | The statement's raw body at a given revision | | `[].timestamp` | `Timestamp` | The timestamp for a statement's revision | ## OpenAPI ````yaml /tango_watchwire/integrations/guides/watchwire-api.yaml get /generic/{statementId}/revisions openapi: 3.1.0 info: title: WatchWire API version: 1.0.0 description: >- The WatchWire Platform has APIs that allow you to access your data programmatically. There are several APIs designed for the modules in the WatchWire platform including - Invoice Data, Real-Time, Accounts Payable, and Measurement & Verification. All are highly scalable, and secure APIs that communicate over HTTPS RESTful protocols with JSON based documents. > **Note**: Not all WatchWire modules are available as an API. # Authentication You need credentials to access the APIs - it is the same credentials as your WatchWire login. The `/authenticate` will return a Token that needs to be included in the header of every subsequent request. The token renews with each request and expires after 60 minutes of inactivity (at which point you will need to re-authenticate and get a new token). > Please contact the WatchWire team for any questions or request for API credential access. # Error Codes There will be various error codes specific to the API you are using, but generally follows these principles: * `Unauthorized` - *you are unauthenticated or unauthorized to request actions on an asset* * `Asset doesn't exist` - *the item you are querying for doesn't exist* * `Server error`\- *general exception raised in our application code* # Rate limit Rate limited to 10 transactions per meter / second servers: - url: https://auth.replace-me.example.com description: Authentication service (Postman variable {{ww-api-baseurl}}) - url: https://realtime.replace-me.example.com description: RealTime API (Postman variable {{gateway-realtime-api}}) - url: https://ap.replace-me.example.com description: Accounts Payable API (Postman variable {{gateway-ap-api}}) - url: https://invoice.replace-me.example.com description: Invoice API (Postman variable {{portal-api-baseurl}}) - url: https://mv.replace-me.example.com description: Measurement & Verification API (Postman variable {{invoice-api}}) security: - BearerAuth: [] tags: - name: Authentication - name: RealTime API - Custom Meter - name: RealTime API - Meter Readings - name: RealTime API - Meter Readings Aggregations - name: RealTime API - Meter Readings Batch Operations - name: RealTime API - Obvius Meter Readings - name: Accounts Payable API - Audit Statements - name: Accounts Payable API - Nexus Statements - name: Accounts Payable API - Standard Statements - name: Accounts Payable API - Statement PDFs - name: Invoice API - Reference IDs - name: Invoice API - Invoice - name: Measurement & Verification API - M&V paths: /generic/{statementId}/revisions: get: tags: - Accounts Payable API - Audit Statements summary: Retrieve Generic Statement Revisions description: >- A `GET` request will list all of a Generic statement's revisions*.* If a response is null, the statement was deleted. *Response Body Structure* | Path | Type | Description | | --- | --- | --- | | `[].response` | `Generic Statement Model` | The statement's raw body at a given revision | | `[].timestamp` | `Timestamp` | The timestamp for a statement's revision | operationId: retrieveGenericStatementRevisions parameters: - name: statementId in: path required: true schema: type: integer description: EnergyWatch statement identifier. responses: '200': description: Successful response content: application/json: schema: type: array items: type: object properties: timestamp: type: string response: type: object properties: uuid: type: string statementId: type: integer accountId: type: integer clientId: type: integer accountCode: type: string commodity: type: string glCode: type: string chargeAmount: type: integer status: type: string statusMessage: type: string pdfUrl: type: string property: type: string vendor: type: string serviceAddress: type: string city: type: string state: type: string zipCode: type: string currency: type: string startDate: type: string endDate: type: string month: type: integer year: type: integer dueDate: type: string newCharges: type: integer totalAmountDue: type: integer glSettings: type: object properties: {} lines: type: array items: type: object properties: lineItemUuid: type: string statementUuid: type: string statementId: type: integer chargeName: type: string chargeAmount: type: integer chargeClassification: type: string example: - timestamp: '2022-01-06T14:33:06.721+00:00' response: uuid: 1d4e2181-eb9d-4229-88fa-6c332387336c statementId: 0 accountId: 0 clientId: 0 accountCode: string commodity: CHILLEDWATER glCode: string chargeAmount: 0 status: ERROR statusMessage: string pdfUrl: string property: string vendor: string serviceAddress: string city: string state: string zipCode: string currency: string startDate: 01/01/2021 endDate: 01/01/2021 month: 0 year: 0 dueDate: 01/01/2021 newCharges: 0 totalAmountDue: 0 glSettings: {} lines: - lineItemUuid: f364a5b9-0981-4434-badf-e750880effab statementUuid: 1d4e2181-eb9d-4229-88fa-6c332387336c statementId: 0 chargeName: string chargeAmount: 0 chargeClassification: string '401': description: Unauthorized - missing, invalid or expired token security: - BearerAuth: [] servers: - url: https://ap.replace-me.example.com description: Accounts Payable API (Postman variable {{gateway-ap-api}}) components: securitySchemes: BearerAuth: type: http scheme: bearer description: >- Token returned by `POST /authenticate`. Expires after 60 minutes of inactivity. ````