> ## Documentation Index > Fetch the complete documentation index at: https://developer.sandbox.co.in/llms.txt > Use this file to discover all available pages before exploring further. # GSTR-1 HSN Summary > Get HSN summary for GSTR-1 data #### Response body schema ## OpenAPI ````yaml api-reference/gst/compliance/openapi.json GET /gst/compliance/tax-payer/gstrs/gstr-1/hsn/{year}/{month} openapi: 3.0.1 info: title: compliance description: >- **GST Compliance API** enables businesses to automate compliance requirements like [Taxpayer verification](https://developer.sandbox.co.in/reference/search-gstin-api), [GSTR Filing](https://developer.sandbox.co.in/reference/gst-taxpayer-authentication), [Generating E-Invoices](https://developer.sandbox.co.in/reference/e-invoice-authentication-api), and [E-Way Bills](https://developer.sandbox.co.in/reference/e-way-bill-authentication-api).We provide these APIs from GSTN-authorised GST Suvidha Providers, handling the encryption-decryption and signing so you don't have to handle the complexities. version: 1.0.0 servers: - url: https://api.sandbox.co.in - url: https://test-api.sandbox.co.in security: [] tags: - name: Public - name: Taxpayer - name: Taxpayer Auth - name: Returns - name: GSTR-1 Documents - name: File GSTR-1 - name: GSTR-2A Documents - name: GSTR-2B Document - name: File GSTR-3B - name: GSTR-4 - name: File GSTR-9 - name: Invoice Management System - name: GSTR-1A Documents - name: File GSTR-1A - name: Ledgers - name: e-Invoice - name: Sales e-Invoices for return period - name: Purchase e-Invoices for return period - name: Front Office Notices - name: Front Office - name: AATO - name: e-Invoice1 - name: Authentication - name: e-Invoice12 - name: E-Way Bill - name: E-Way Bill1 - name: Authentication1 - name: Consignor - name: Consolidated E-Way Bill - name: Multi-Vehicle Movement - name: Consignee - name: Transporter - name: Consolidated E-Way Bill1 - name: Multi-vehicle Movement - name: Common paths: /gst/compliance/tax-payer/gstrs/gstr-1/hsn/{year}/{month}: get: tags: - Taxpayer - Returns - GSTR-1 Documents summary: GSTR-1 HSN Summary description: Get HSN summary for GSTR-1 data operationId: getGstr1HsnSummary parameters: - name: year in: path description: '' required: true example: '' schema: type: string - name: month in: path description: '' required: true example: '' schema: type: string - name: authorization in: header description: >- GST taxpayer access token. For token-generation steps, refer to the [Generate Taxpayer Session](/recipes/gst/authentication/generate_tax_payer_session) recipe, then pass the token in the authorization header. required: true example: '' schema: type: string - name: x-api-version in: header description: API version required: false example: '' schema: type: string default: 1.0.0 - name: x-api-key in: header description: API key for identification required: true example: '' schema: type: string responses: '200': description: 200 Success / RET11416 No data found content: application/json: schema: type: object properties: code: type: number example: 200 data: type: object properties: data: type: object properties: hsn: type: object properties: chksum: type: string example: >- 1a60e5144b4eecdc03ea2326ea0c5171ff7973840f10e9a409e8934c01283743 data: type: array items: type: object properties: camt: type: number example: 2285 desc: type: string example: >- Individual tax preparation and planning services hsn_sc: type: string example: '998232' iamt: type: number example: 237746 num: type: number example: 1 qty: type: number example: 0 rt: type: number example: 18 samt: type: number example: 2285 txval: type: number example: 1346201 uqc: type: string example: NA example: - camt: 2285 desc: >- Individual tax preparation and planning services hsn_sc: '998232' iamt: 237746 num: 1 qty: 0 rt: 18 samt: 2285 txval: 1346201 uqc: NA flag: type: string example: 'N' error: type: object properties: error_cd: type: string example: RET11416 message: type: string example: >- No document found in selected financial year. Either this document exists in a different financial year or the document number is incorrect. status_cd: type: string example: '1' timestamp: type: number example: 1763446641000 transaction_id: type: string example: 3f809d3d-8fa8-4c17-a798-8981318122e9 examples: 200 Success: summary: 200 Success value: code: 200 data: data: hsn: chksum: >- 1a60e5144b4eecdc03ea2326ea0c5171ff7973840f10e9a409e8934c01283743 data: - camt: 2285 desc: Individual tax preparation and planning services hsn_sc: '998232' iamt: 237746 num: 1 qty: 0 rt: 18 samt: 2285 txval: 1346201 uqc: NA flag: 'N' status_cd: '1' timestamp: 1763446641000 transaction_id: 3f809d3d-8fa8-4c17-a798-8981318122e9 RET11416 No data found: summary: RET11416 No data found value: code: 200 data: error: error_cd: RET11416 message: >- No document found in selected financial year. Either this document exists in a different financial year or the document number is incorrect. status_cd: '0' timestamp: 1763446641000 transaction_id: 12fff328-4baa-4dc4-bce8-0e47476c8fdd headers: {} deprecated: false security: [] ````