> ## Documentation Index > Fetch the complete documentation index at: https://docs.aiinsurance.io/llms.txt > Use this file to discover all available pages before exploring further. # Get Event Transaction > Returns a single financial transaction by ID, including line items (itemizations). **Required permission:** `company.event:export` ## OpenAPI ````yaml /openapi/generated-external-api.yaml get /api/external/companies/{companyId}/events/{eventId}/financials/transactions/{transactionId} openapi: 3.0.3 info: title: AI Insurance External API description: External API for AI Insurance platform version: 1.0.0 contact: email: support@aiinsurance.io servers: - url: https://app.aiinsurance.io description: Production security: - ApiKeyAuth: [] paths: /api/external/companies/{companyId}/events/{eventId}/financials/transactions/{transactionId}: get: tags: - Event Financials summary: Get Event Transaction description: > Returns a single financial transaction by ID, including line items (itemizations). **Required permission:** `company.event:export` operationId: getEventTransaction parameters: - $ref: '#/components/parameters/companyId' - $ref: '#/components/parameters/eventId' - $ref: '#/components/parameters/transactionId' responses: '200': description: Transaction details with line items content: application/json: schema: $ref: '#/components/schemas/EventTransactionDetail' examples: withLineItems: summary: Transaction with line items value: id: 550e8400-e29b-41d4-a716-446655440010 eventId: 550e8400-e29b-41d4-a716-446655440001 payeeId: 550e8400-e29b-41d4-a716-446655440051 transactionType: alae_invoice status: owed amount: 75000 invoiceNumber: INV-2025-002 invoiceDate: '2025-01-18' dueDate: '2025-02-18' paidDate: null description: Legal fees voidReason: null isDraft: false isForwardedInvoice: false lineItems: - id: 550e8400-e29b-41d4-a716-446655440060 lineItemName: Legal Fees description: Initial consultation amount: 50000 - id: 550e8400-e29b-41d4-a716-446655440061 lineItemName: Legal Fees description: Document review amount: 25000 createdAt: '2025-01-18T09:00:00.000Z' createdBy: google-oauth2|123456789 updatedAt: null updatedBy: null nonItemized: summary: Non-itemized transaction (empty line items) value: id: 550e8400-e29b-41d4-a716-446655440010 eventId: 550e8400-e29b-41d4-a716-446655440001 payeeId: 550e8400-e29b-41d4-a716-446655440050 transactionType: indemnity_invoice status: paid amount: 500000 invoiceNumber: INV-2025-001 invoiceDate: '2025-01-15' dueDate: '2025-02-15' paidDate: '2025-01-20' description: Initial claim payment voidReason: null isDraft: false isForwardedInvoice: false lineItems: [] createdAt: '2025-01-15T10:30:00.000Z' createdBy: google-oauth2|123456789 updatedAt: '2025-01-20T14:00:00.000Z' updatedBy: google-oauth2|123456789 '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': description: Event or transaction not found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: eventNotFound: summary: Event not found value: error: code: NOT_FOUND message: Event not found transactionNotFound: summary: Transaction not found value: error: code: NOT_FOUND message: Transaction not found '500': $ref: '#/components/responses/InternalServerError' components: parameters: companyId: name: companyId in: path required: true schema: type: string format: uuid description: Company identifier eventId: name: eventId in: path required: true schema: type: string format: uuid description: Event identifier transactionId: name: transactionId in: path required: true schema: type: string format: uuid description: Transaction identifier schemas: EventTransactionDetail: type: object description: A financial transaction with full details including line items allOf: - $ref: '#/components/schemas/EventTransaction' - type: object properties: lineItems: type: array items: $ref: '#/components/schemas/EventTransactionLineItem' description: Line items (itemizations) for the transaction ErrorResponse: type: object description: Standard error response for all external API endpoints required: - error properties: error: type: object required: - code - message properties: code: type: string description: Machine-readable error code example: VALIDATION_ERROR message: type: string description: Human-readable error message example: 'submissionId: Required field is missing' details: type: array description: Additional details for validation errors (field-level errors) items: type: object properties: field: type: string description: The field that caused the error example: submissionId message: type: string description: Description of the field error example: Required field is missing EventTransaction: type: object description: A financial transaction associated with an event properties: id: type: string format: uuid description: Transaction identifier eventId: type: string format: uuid description: Associated event identifier payeeId: type: string format: uuid nullable: true description: Associated payee identifier transactionType: type: string description: >- Transaction category identifier (e.g., "indemnity_invoice", "alae_invoice") status: $ref: '#/components/schemas/EventTransactionStatus' amount: type: integer description: Transaction amount in cents invoiceNumber: type: string nullable: true description: Invoice number for the transaction invoiceDate: type: string format: date nullable: true description: Invoice date (YYYY-MM-DD) dueDate: type: string format: date nullable: true description: Payment due date (YYYY-MM-DD) paidDate: type: string format: date nullable: true description: Date the transaction was paid (YYYY-MM-DD) description: type: string nullable: true description: Transaction description voidReason: type: string nullable: true description: Reason for voiding the transaction (only present if status is void) isDraft: type: boolean description: Whether the transaction is a draft isForwardedInvoice: type: boolean description: Whether the transaction is a forwarded invoice createdAt: type: string format: date-time description: When the transaction was created (ISO 8601) createdBy: type: string nullable: true description: User ID who created the transaction updatedAt: type: string format: date-time nullable: true description: When the transaction was last updated (ISO 8601) updatedBy: type: string nullable: true description: User ID who last updated the transaction EventTransactionLineItem: type: object description: A line item within an event transaction properties: id: type: string format: uuid description: Line item identifier lineItemName: type: string description: Account/category name for the line item description: type: string nullable: true description: Description of the line item amount: type: integer description: >- Line item amount in cents (signed - positive for debits on debit-normal accounts, negative for credits) EventTransactionStatus: type: string description: Status of a financial transaction enum: - owed - paid - approved - void responses: Unauthorized: description: Unauthorized - Invalid or missing API key content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: missingApiKey: summary: Missing API key value: error: code: UNAUTHORIZED message: Authorization header is required bearerTokenNotAllowed: summary: Bearer token used instead of API key value: error: code: UNAUTHORIZED message: External API endpoints require API key authentication Forbidden: description: Forbidden - Insufficient permissions content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: insufficientPermissions: summary: Insufficient permissions value: error: code: FORBIDDEN message: Insufficient permissions to perform this action InternalServerError: description: Internal Server Error - Unexpected error occurred content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: internalError: summary: Unexpected server error value: error: code: INTERNAL_ERROR message: An unexpected error occurred. Please try again later. securitySchemes: ApiKeyAuth: type: apiKey in: header name: Authorization description: >- API key authentication. Include your API key in the Authorization header. ````