> ## Documentation Index > Fetch the complete documentation index at: https://docs.cognigy.com/llms.txt > Use this file to discover all available pages before exploring further. # Update scenario > Update an existing scenario with new configuration. ## OpenAPI ````yaml https://api-trial.cognigy.ai/testing/openapi/openapi-viewer.json patch /simulations/{simulationReference} openapi: 3.0.0 info: title: SIMULATOR OPENAPI REST-ful-API Reference version: 2025.20.0 description: > ### Introduction This is the [OpenAPI 3.0](https://swagger.io/specification/) documentation of the [REST](https://en.wikipedia.org/wiki/Representational_state_transfer)-ful SIMULATOR OPENAPI API. ### Cross-Origin Resource Sharing This API features Cross-Origin Resource Sharing (CORS) implemented in compliance with [W3C spec](https://www.w3.org/TR/cors/), which allows cross-domain communication from the browser. All responses have a wildcard same-origin header which makes the API completely accessible. ### Authentication SIMULATOR OPENAPI offers following forms of authentication: - Bearer Token (JWT) - API Key ### Error Handling This API uses HTTP status codes equal or above 400 to indicate errors. Error details are generated in compliance with [RFC 7807 - "Problem Details for HTTP APIs"](https://tools.ietf.org/html/rfc7807). Every error response contains a traceId, which should be provided to the SIMULATOR OPENAPI Technical Support when reporting an error. contact: name: Cognigy Technical Support url: https://www.cognigy.com email: support@cognigy.com license: name: Cognigy Proprietary License servers: - url: https://api-trial.cognigy.ai/testing description: Cognigy Service Testing API security: - bearerAuth: [] - apiKeyAuth: [] tags: - name: Simulations description: >- Simulation management operations - Create, read, update, and delete simulations externalDocs: description: SIMULATOR OPENAPI Documentation url: https://docs.cognigy.com/docs/service-testing/ paths: /simulations/{simulationReference}: patch: tags: - Simulations summary: Update scenario description: Update an existing scenario with new configuration. operationId: updateSimulation parameters: - name: projectId in: query required: true schema: type: string description: Project identifier - in: path name: simulationReference required: true schema: type: string description: Reference ID of the scenario requestBody: required: true content: application/json: schema: type: object properties: name: type: string description: Name of the scenario persona: type: string description: Persona description personaName: type: string description: Name of the persona mission: type: string description: Mission description successCriteria: type: array description: List of success criteria (structured objects) items: type: object properties: type: type: string description: Success criterion type params: type: object description: Success criterion parameters required: - type - params maxTurns: type: integer description: Maximum number of turns timeout: type: integer description: Timeout in seconds aiAgentReferenceId: type: string description: Reference ID of the AI Agent flowReferenceId: type: string description: Reference ID of the Flow jobNodeId: type: string description: Job Node ID responses: '200': description: Scenario updated successfully content: application/json: schema: type: object properties: id: type: string description: Unique identifier for the scenario referenceId: type: string description: Reference ID for the scenario name: type: string description: Name of the scenario persona: type: string description: Persona description personaName: type: string description: Name of the persona mission: type: string description: Mission description successCriteria: type: array description: List of success criteria (structured objects) items: type: object properties: type: type: string description: Success criterion type params: type: object description: Success criterion parameters required: - type - params maxTurns: type: integer description: Maximum number of turns timeout: type: integer description: Timeout in seconds aiAgentReferenceId: type: string description: Reference ID of the AI Agent aiAgentId: type: string description: Database ID of the AI Agent flowReferenceId: type: string description: Reference ID of the Flow flowId: type: string description: Database ID of the Flow jobNodeId: type: string description: Job Node ID organisationReference: type: string description: Organization reference projectReference: type: string description: Project reference createdAt: type: integer format: int64 description: Creation timestamp createdBy: type: string description: User who created the scenario updatedAt: type: integer format: int64 description: Last update timestamp updatedBy: type: string description: User who last updated the scenario lastChanged: type: integer format: int64 description: Last change timestamp lastChangedBy: type: string description: User who made the last change required: - id - referenceId - name - persona - personaName - mission - successCriteria - organisationReference - projectReference - createdAt - createdBy - lastChanged - lastChangedBy '400': description: Bad Request - Invalid input parameters content: application/json: schema: type: object properties: error: type: string description: Validation error message field: type: string description: Field that failed validation code: type: string description: Validation error code traceId: type: string description: Trace ID for debugging required: - error - field '401': description: Unauthorized - Invalid or missing authentication content: application/json: schema: type: object properties: error: type: string description: Unauthorized error message code: type: string description: Unauthorized error code traceId: type: string description: Trace ID for debugging required: - error '403': description: Forbidden - Insufficient permissions content: application/json: schema: type: object properties: error: type: string description: Forbidden error message code: type: string description: Forbidden error code traceId: type: string description: Trace ID for debugging required: - error '404': description: Not Found - Resource not found content: application/json: schema: type: object properties: error: type: string description: Not found error message code: type: string description: Not found error code traceId: type: string description: Trace ID for debugging required: - error '500': description: Internal Server Error - Server error content: application/json: schema: type: object properties: error: type: string description: Error message code: type: string description: Error code traceId: type: string description: Trace ID for debugging required: - error security: - bearerAuth: [] - apiKeyAuth: [] components: securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: JWT Bearer Token for authentication apiKeyAuth: type: apiKey in: header name: X-API-Key description: API Key for authentication ````