> ## Documentation Index > Fetch the complete documentation index at: https://docs.equalsmoney.com/llms.txt > Use this file to discover all available pages before exploring further. # Simulate a card authorisation > Simulates a card authorisation. This endpoint is for testing purposes only and won't work in production. ## OpenAPI ````yaml /autogenerated/openapi/cards.openapi.json post /cards/simulations/transaction/authorization openapi: 3.1.0 info: title: Cards API version: 2.0.0 description: Version 2 license: name: UNLICENSED url: https://docs.equalsmoney.com servers: - url: https://api.equalsmoney.com/v2 description: Production - url: https://api-sandbox.equalsmoney.com/v2 description: Sandbox security: [] paths: /cards/simulations/transaction/authorization: post: tags: - Simulations summary: Simulate a card authorisation description: |2- Simulates a card authorisation. This endpoint is for testing purposes only and won't work in production. operationId: simulateCardAuthorization parameters: - name: accountId in: query schema: description: The ID of the account to work with. type: - string example: F50091 required: true requestBody: description: Body content: application/json: schema: type: - object properties: cardId: description: The ID of the card to work with. type: - string format: uuid maxLength: 36 example: e9293471-5eb3-4dbc-916c-dbaf9e2deefd amount: type: - number minimum: 0 description: The amount. example: 10 network: type: - string description: The card network. example: VISA cardAcceptor: type: - object properties: mid: type: - string maxLength: 36 description: >- The Merchant Identifier (MID). This identifies a specific merchant. required: - mid required: - cardId - amount - network - cardAcceptor example: cardId: e9293471-5eb3-4dbc-916c-dbaf9e2deefd amount: 10 network: VISA cardAcceptor: mid: string responses: '201': description: Created content: application/json: schema: type: - object properties: transaction: type: - object properties: acquirerFeeAmount: type: - string description: The acquirer fee amount. example: '1.2' type: type: - string description: The type of transaction. example: authorization.clearing state: type: - string description: The state of the transaction. example: COMPLETION token: type: - string format: uuid description: The transaction token. example: 7bff9f48-8c68-4937-917a-bf7cf4f0de27 userToken: type: - string format: uuid description: The user token. example: f0d5cae0-fb3f-417f-8f1c-51c5fb66259a cardToken: type: - string format: uuid description: The card token. example: 3c5d4203-99dc-4bbb-a8c4-e5c61fbe563a requestAmount: type: - string description: The request amount. example: '10.0' response: type: - object properties: code: type: - string description: The transaction response code. example: '0000' memo: type: - string description: The transaction response memo. example: Approved or completed successfully description: Details about the transaction response. createdTime: type: - string format: date-time description: >- The date and time at which the resource was initially created, in ISO 8601 format without milliseconds. example: '2022-12-06T21:41:48Z' userTransactionTime: type: - string format: date-time description: >- The date and time of the user transaction, in ISO 8601 format without milliseconds. example: '2022-12-06T21:41:49Z' settlementDate: type: - string format: date-time description: >- The settlement date, in ISO 8601 format without milliseconds. example: '2022-12-06T21:41:50Z' amount: type: - string description: The transaction amount. example: '10.0' gpa: type: - object properties: ledgerBalance: type: - string description: The ledger balance. example: '240.0' availableBalance: type: - string description: The available balance. example: '240.0' impactedAmount: type: - string description: The impacted amount. example: '-10.0' currencyCode: type: - string description: The currency code, in ISO 4217 format. example: GBP currencyConversion: type: - object properties: originalAmount: type: - string description: The original amount. example: '10.0' conversionRate: type: - number description: The conversion rate. example: 1 originalCurrencyCode: type: - string description: >- The numeric code of the currency used in the transaction, in ISO 4217 format. example: '826' precedingRelatedTransactionToken: type: - string format: uuid description: The token of the preceding related transaction. example: 8a6d911e-cb3d-41d2-b843-5f9dc97d503c network: type: - string description: The card network. example: VISA subnetwork: type: - string description: The sub-network. example: VISANET cardAcceptor: type: - object properties: postalCode: type: - string description: The postal or ZIP code of the card acceptor. example: '33705' mid: type: - string description: >- The Merchant identifier (MID). This identifies a specific merchant. example: '000000000011111' mcc: type: - string description: The Merchant Category Code (MCC). example: '6411' name: type: - string description: The name of the card acceptor. example: Card Acceptor Name city: type: - string description: The city of the card acceptor. example: Seattle state: type: - string description: The state of the card acceptor. example: WA countryCode: type: - string description: >- The country code of the card acceptor's country, in ISO 3166-1 format (alpha-2). example: USA description: Details about the transaction. example: transaction: acquirerFeeAmount: '1.2' type: authorization.clearing state: COMPLETION token: 7bff9f48-8c68-4937-917a-bf7cf4f0de27 userToken: f0d5cae0-fb3f-417f-8f1c-51c5fb66259a cardToken: 3c5d4203-99dc-4bbb-a8c4-e5c61fbe563a requestAmount: '10.0' response: code: '0000' memo: Approved or completed successfully createdTime: '2022-12-06T21:41:48Z' userTransactionTime: '2022-12-06T21:41:49Z' settlementDate: '2022-12-06T21:41:50Z' amount: '10.0' gpa: ledgerBalance: '240.0' availableBalance: '240.0' impactedAmount: '-10.0' currencyCode: GBP currencyConversion: originalAmount: '10.0' conversionRate: 1 originalCurrencyCode: '826' precedingRelatedTransactionToken: 8a6d911e-cb3d-41d2-b843-5f9dc97d503c network: VISA subnetwork: VISANET cardAcceptor: postalCode: '33705' mid: '000000000011111' mcc: '6411' name: Card Acceptor Name city: Seattle state: WA countryCode: USA security: - CommonAuth: [] x-codeSamples: - lang: Shell label: cURL source: |- curl --request POST \ --url 'https://api.equalsmoney.com/v2/cards/simulations/transaction/authorization?accountId={{accountId}}' \ --header 'Authorization: ' \ --header 'Content-Type: application/json' \ --data ' { "cardId": "e9293471-5eb3-4dbc-916c-dbaf9e2deefd", "amount": 10, "network": "VISA", "cardAcceptor": { "mid": "string" } } ' components: securitySchemes: CommonAuth: type: apiKey in: header name: Authorization ````