> ## 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-2A ISD > Get invoices in GSTR2A related to ISD credit for a return period for authenticated taxpayer #### Response body schema ## OpenAPI ````yaml api-reference/gst/compliance/openapi.json GET /gst/compliance/tax-payer/gstrs/gstr-2a/isd/{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-2a/isd/{year}/{month}: get: tags: - Taxpayer - Returns - GSTR-2A Documents summary: GSTR-2A ISD description: >- Get invoices in GSTR2A related to ISD credit for a return period for authenticated taxpayer operationId: getGstr2aIsd parameters: - name: year in: path description: '' required: true example: '' schema: type: string - name: month in: path description: '' required: true example: '' schema: type: string - name: counterparty_gstin in: query description: '`optional` Counter party GSTIN' required: false schema: type: string example: '{{ctin}}' - 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 / RET13509 No data found content: application/json: schema: type: object properties: code: type: number example: 200 data: type: object properties: error: type: object properties: error_cd: type: string example: RET13509 message: type: string example: No document found for the provided Inputs isd: type: array items: type: object properties: cfs: type: string example: 'Y' ctin: type: string example: 16DEFPS8555D1Z7 doclist: type: array items: type: object properties: camt: type: number example: 20 cess: type: number example: 20 chksum: type: string example: AflJufPlFStqKBZ docdt: type: string example: 02-12-2023 docnum: type: string example: '1004' iamt: type: number example: 20 isd_docty: type: string example: ISD itc_elg: type: string example: 'Y' samt: type: number example: 20 example: - camt: 20 cess: 20 chksum: AflJufPlFStqKBZ docdt: 02-12-2023 docnum: '1004' iamt: 20 isd_docty: ISD itc_elg: 'Y' samt: 20 example: - cfs: 'Y' ctin: 16DEFPS8555D1Z7 doclist: - camt: 20 cess: 20 chksum: AflJufPlFStqKBZ docdt: 02-12-2023 docnum: '1004' iamt: 20 isd_docty: ISD itc_elg: 'Y' samt: 20 status_cd: type: string example: '0' timestamp: type: number example: 1763446641000 transaction_id: type: string example: a1283380-4fc6-4a94-bf2c-3fc10e238f41 examples: 200 Success: summary: 200 Success value: code: 200 data: isd: - cfs: 'Y' ctin: 16DEFPS8555D1Z7 doclist: - camt: 20 cess: 20 chksum: AflJufPlFStqKBZ docdt: 02-12-2023 docnum: '1004' iamt: 20 isd_docty: ISD itc_elg: 'Y' samt: 20 timestamp: 1763446641000 transaction_id: a1283380-4fc6-4a94-bf2c-3fc10e238f41 RET13509 No data found: summary: RET13509 No data found value: code: 200 data: error: error_cd: RET13509 message: No document found for the provided Inputs status_cd: '0' timestamp: 1763446641000 transaction_id: b49a3907-4e8f-4fba-a79a-d57c576806e3 headers: {} deprecated: false security: [] ````