> ## Documentation Index > Fetch the complete documentation index at: https://docs.serval.com/llms.txt > Use this file to discover all available pages before exploring further. # List Ticket External Messages > List all origin external messages for a ticket. These are messages that originated from external systems and were synced into Serval. This helps you understand which messages came from which external channels. ## OpenAPI ````yaml /sections/api-reference/openapi-spec-v2.yaml get /v2/tickets/{ticket_id}/external-messages openapi: 3.1.0 info: title: Serval Public API description: Serval Public API contact: name: Serval url: https://serval.com email: support@serval.com license: name: Serval License url: https://serval.com/license version: 2.0.0 servers: - url: https://public.api.serval.com security: - BearerAuth: [] tags: - name: Access Policy API - name: Access Policy Approval Procedure API - name: Access Profile API - name: Access Relationship API - name: Access Request API - name: Agent API - name: App Instance API - name: App Resource API - name: App Resource Role API - name: Approval Delegation API - name: Approval Request API - name: Audit Log API - name: Change Blackout API - name: Change Model API - name: Custom Field API - name: Custom Service API - name: Entity API - name: Entity Field Mapping API - name: Entity Ingestion Config API - name: Entity Type API - name: Folder API - name: Group API - name: Guidance API - name: Help Agent API - name: Journey API - name: Knowledge API - name: Knowledge Base API - name: Report API - name: SLA API - name: Schedule API - name: Tag API - name: Team API - name: Team User API - name: Ticket API - name: Topic API - name: User API - name: User Relationship API - name: Workflow API - name: Workflow Approval Procedure API - name: Workflow Run API paths: /v2/tickets/{ticket_id}/external-messages: get: tags: - Ticket API summary: List Ticket External Messages description: >- List all origin external messages for a ticket. These are messages that originated from external systems and were synced into Serval. This helps you understand which messages came from which external channels. operationId: svrelay.publicv2.PublicAPIServiceV2.ListTicketExternalMessages parameters: - name: ticket_id in: path required: true schema: type: string title: ticket_id description: The ID of the Serval ticket to list external messages for responses: '200': description: Success content: application/json: schema: $ref: >- #/components/schemas/svhelp.publicapi.ListTicketExternalMessagesResponse default: description: Error content: application/json: schema: $ref: '#/components/schemas/connect.error' security: - BearerAuth: [] components: schemas: svhelp.publicapi.ListTicketExternalMessagesResponse: type: object properties: data: type: array items: $ref: '#/components/schemas/svhelp.pubapimodels.ExternalMessage' title: data x-stainless-terraform-configurability: optional title: ListTicketExternalMessagesResponse additionalProperties: false connect.error: type: object properties: code: type: string examples: - not_found enum: - canceled - unknown - invalid_argument - deadline_exceeded - not_found - already_exists - permission_denied - resource_exhausted - failed_precondition - aborted - out_of_range - unimplemented - internal - unavailable - data_loss - unauthenticated description: >- The status code, which should be an enum value of [google.rpc.Code][google.rpc.Code]. x-stainless-terraform-configurability: optional message: type: string description: >- A developer-facing error message, which should be in English. Any user-facing error message should be localized and sent in the [google.rpc.Status.details][google.rpc.Status.details] field, or localized by the client. x-stainless-terraform-configurability: optional detail: $ref: '#/components/schemas/google.protobuf.Any' x-stainless-terraform-configurability: optional title: Connect Error additionalProperties: true description: >- Error type returned by Connect: https://connectrpc.com/docs/go/errors/#http-representation svhelp.pubapimodels.ExternalMessage: type: object properties: id: type: string title: id description: The ID of the external message in Serval's system readOnly: true x-stainless-terraform-configurability: computed externalMessageId: type: string title: external_message_id description: The ID of the external message in the external system readOnly: true x-stainless-terraform-configurability: computed messageId: type: string title: message_id description: The ID of the Serval message this external message is linked to readOnly: true x-stainless-terraform-configurability: computed sourceType: $ref: '#/components/schemas/svhelp.pubapimodels.ExternalMessageSourceType' title: source_type description: The type of external system (Slack, Jira, Email, etc.) readOnly: true x-stainless-terraform-configurability: computed sourceId: type: string title: source_id description: The ID of the source/integration in Serval readOnly: true x-stainless-terraform-configurability: computed isOrigin: type: boolean title: is_origin description: >- Whether this external message is the origin source of the Serval message True if the Serval message was created from this external message readOnly: true x-stainless-terraform-configurability: computed createdAt: $ref: '#/components/schemas/google.protobuf.Timestamp' title: created_at description: Timestamp when the external message link was created readOnly: true x-stainless-terraform-configurability: computed updatedAt: $ref: '#/components/schemas/google.protobuf.Timestamp' title: updated_at description: Timestamp when the external message link was last updated readOnly: true x-stainless-terraform-configurability: computed toRecipientEmails: type: array items: type: string readOnly: true title: to_recipient_emails description: |- Email-specific fields (only populated when source_type is EMAIL) The To recipient email addresses readOnly: true x-stainless-terraform-configurability: computed ccRecipientEmails: type: array items: type: string readOnly: true title: cc_recipient_emails description: The CC recipient email addresses readOnly: true x-stainless-terraform-configurability: computed title: ExternalMessage additionalProperties: false description: >- ExternalMessage represents a Serval message's connection to an external system google.protobuf.Any: type: object properties: type: type: string x-stainless-terraform-configurability: optional value: type: string format: binary x-stainless-terraform-configurability: optional debug: type: object additionalProperties: true x-stainless-terraform-configurability: optional additionalProperties: true description: >- Contains an arbitrary serialized message along with a @type that describes the type of the serialized message. svhelp.pubapimodels.ExternalMessageSourceType: type: string title: ExternalMessageSourceType enum: - EXTERNAL_MESSAGE_SOURCE_TYPE_UNSPECIFIED - EXTERNAL_MESSAGE_SOURCE_TYPE_SLACK - EXTERNAL_MESSAGE_SOURCE_TYPE_LINEAR - EXTERNAL_MESSAGE_SOURCE_TYPE_EMAIL - EXTERNAL_MESSAGE_SOURCE_TYPE_JIRA - EXTERNAL_MESSAGE_SOURCE_TYPE_PUBLIC_API - EXTERNAL_MESSAGE_SOURCE_TYPE_FRESHSERVICE - EXTERNAL_MESSAGE_SOURCE_TYPE_ZENDESK - EXTERNAL_MESSAGE_SOURCE_TYPE_SERVICENOW - EXTERNAL_MESSAGE_SOURCE_TYPE_PHONE_CALL - EXTERNAL_MESSAGE_SOURCE_TYPE_MICROSOFT description: External message source types google.protobuf.Timestamp: type: string format: date-time description: A timestamp in RFC 3339 format (e.g., "2025-01-15T01:30:15Z"). securitySchemes: BearerAuth: type: http scheme: bearer ````