> ## Documentation Index > Fetch the complete documentation index at: https://developer.fabric.inc/llms.txt > Use this file to discover all available pages before exploring further. # Get acknowledgment receipt for notification > This endpoint gets notification acknowledgment from external service. ## OpenAPI ````yaml notifications.openapi post /oms-notifications/acknowledge openapi: 3.0.1 info: contact: email: support@fabric.inc name: Orders team description: >- fabric **Notifications** API enables you (Storefronts) to resend notifications to customers for specific order-related events, such as confirmation, status updates, cancellations, and more. it's also used to get notification acknowledgements from external services. license: name: fabric API License url: https://fabric.inc/api-license termsOfService: https://fabric.inc/terms-of-use title: Orders - Notifications API version: 3.0.0 x-audience: external-public servers: - description: Production url: https://api.fabric.inc/v3 security: - authorization: [] tags: - description: >- fabric **Notifications** API enables you (Storefronts) to resend notifications to customers for specific order-related events, such as confirmation, status updates, cancellations, and more. it's also used to get notification acknowledgements from external services. name: Notifications externalDocs: description: Find out more about fabric Orders (also called OMS) url: https://developer.fabric.inc/v3/docs/orders-overview paths: /oms-notifications/acknowledge: post: tags: - Notifications summary: Get acknowledgment receipt for notification description: This endpoint gets notification acknowledgment from external service. operationId: acknowledgeNotification parameters: - $ref: '#/components/parameters/xFabricTenantId' - $ref: '#/components/parameters/xFabricChannelId' - $ref: '#/components/parameters/xFabricRequestId' requestBody: content: application/json: schema: $ref: '#/components/schemas/acknowledgmentRequest' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/apiResponse' description: OK headers: x-fabric-request-id: $ref: '#/components/headers/xFabricRequestIdResponseHeader' '400': content: application/json: example: errors: - message: Invalid request type: CLIENT_ERROR message: Bad request type: CLIENT_ERROR schema: $ref: '#/components/schemas/errorResponse' description: Bad request headers: x-fabric-request-id: $ref: '#/components/headers/xFabricRequestIdResponseHeader' '401': content: application/json: example: message: Unauthorized request type: CLIENT_ERROR schema: $ref: '#/components/schemas/errorResponse' description: Unauthorized headers: x-fabric-request-id: $ref: '#/components/headers/xFabricRequestIdResponseHeader' '404': content: application/json: example: message: No resource found for the given ID type: CLIENT_ERROR schema: $ref: '#/components/schemas/errorResponse' description: Not found headers: x-fabric-request-id: $ref: '#/components/headers/xFabricRequestIdResponseHeader' '500': content: application/json: example: message: Internal server error type: SERVER_ERROR schema: $ref: '#/components/schemas/errorResponse' description: Internal server error headers: x-fabric-request-id: $ref: '#/components/headers/xFabricRequestIdResponseHeader' components: parameters: xFabricTenantId: description: >- A header used by fabric to identify the tenant making the request. You must include tenant id in the authentication header for an API request to access any of fabric’s endpoints. You can retrieve the tenant id , which is also called account id, from [Copilot](/v3/platform/settings/account-details/getting-the-account-id). This header is required. example: 5f328bf0b5f328bf0b5f328b in: header name: x-fabric-tenant-id required: true schema: type: string xFabricChannelId: description: >- x-fabric-channel-id identifies the sales channel where the API request is being made; primarily for multichannel use cases. The channel ids are 12 corresponding to US and 13 corresponding to Canada. The default channel id is 12. This field is required. example: '12' in: header name: x-fabric-channel-id required: true schema: type: string xFabricRequestId: description: Unique request ID example: 263e731c-45c8-11ed-b878-0242ac120002 in: header name: x-fabric-request-id required: false schema: type: string schemas: acknowledgmentRequest: description: Acknowledgment request details properties: acknowledgedAt: description: Notification event acknowledgement time (UTC format) example: '2022-07-14T10:27:28-05:00' type: string documentId: description: >- Unique ID based on `documentType`. When `documentType` is `ORDER`, this is the order ID. example: 6319c04f2ec591b653f328dd type: string documentType: description: Module name enum: - ALLOCATION - ORDER - LOCATION - SHIPMENT - INVENTORY - INVOICE - TRANSFER - LOCATION_OUTAGE - TRANSFER_SHIPMENT - LOCATION_CAPACITY_OVERRIDE example: ORDER type: string notificationType: description: Notification type enum: - SINGLE_ITEM_ORDER_CONFIRMATION_EMAIL - MULTI_ITEM_ORDER_CONFIRMATION_EMAIL - BOPIS_ORDER_CONFIRMATION_EMAIL - SHIPPING_CONFIRMATION_EMAIL - BOPIS_ORDER_READY_FOR_PICKUP - BOPIS_ORDER_COMPLETED - BOPIS_REMINDER_EMAIL - BACKORDER_NOTIFICATION_EMAIL - BACKORDER_30_DAYS_CONSENT_TO_DELAY_EMAIL - BACKORDER_53_DAYS_CONSENT_TO_DELAY_EMAIL - BACKORDER_CANCEL_EMAIL - BACKORDER_AUTH_DECLINE_EMAIL - ORDER_CANCELLATION_EMAIL_WEBCSC_ORDER_ITEM_CANCEL - ORDER_CANCELLATION_EMAIL_WEBCSC_ORDER_CANCEL - ORDER_CANCELLATION_EMAIL_LOCATE_ORDER_ITEM_CANCEL - RETURN_NOTIFICATION_EMAIL - REFUND_NOTIFICATION_EMAIL - APPEASEMENT_NOTIFICATION_EMAIL - EXCHANGE_NOTIFICATION_EMAIL - SHIPMENT_CREATED - ORDER_CREATED - INVOICE_POSTED - HIGH_ALERT_NOTIFICATION_EMAIL - MEDIUM_ALERT_NOTIFICATION_EMAIL - LOW_ALERT_NOTIFICATION_EMAIL - PAYMENT_AUTH_DECLINED_EMAIL example: BOPIS_ORDER_COMPLETED type: string required: - acknowledgedAt - documentId - documentType - notificationType type: object apiResponse: description: Response message properties: message: description: Response message example: OK type: string type: object errorResponse: description: Error response properties: errors: description: Errors items: $ref: '#/components/schemas/errorResponse' type: array message: description: Error message example: Bad request type: string type: description: Error type example: CLIENT_ERROR type: string type: object headers: xFabricRequestIdResponseHeader: description: Unique request ID example: 263e731c-45c8-11ed-b878-0242ac120002 required: false schema: type: string securitySchemes: authorization: bearerFormat: JWT scheme: bearer type: http ````