# Cancel membership/subscription contract

Cancels a membership/subscription contract and sends cancellation confirmation emails. This endpoint terminates the recurring subscription and processes all cancellation workflows.

Cancellation Process:
- Contract Termination: Marks subscription as cancelled in Shopify
- Billing Stop: Prevents future billing attempts
- Email Notification: Sends cancellation confirmation to customer
- Activity Logging: Records cancellation event with source and feedback
- Feedback Capture: Optional cancellation reason for analytics

Key Features:
- Immediate Cancellation: Stops subscription processing immediately
- Feedback Collection: Capture customer cancellation reasons
- Automated Emails: Customer receives cancellation confirmation
- Activity Tracking: Logs cancellation to activity history
- Source Attribution: Tracks whether cancellation came from customer portal or API

Validation Checks:
- Contract Ownership: Verifies contract belongs to authenticated shop
- Minimum Cycles: Checks if minimum billing cycles requirement is met (if configured)
- Freeze Status: Validates subscription is not frozen
- Existing Status: Ensures contract is not already cancelled

Email Notifications:
- Sends cancellation confirmation to customer email
- Includes subscription details and cancellation date
- Uses customizable email templates from shop settings

Use Cases:
- Allow customers to cancel from custom portals or mobile apps
- Bulk cancellation workflows via external systems
- Integration with customer service platforms
- Automated cancellation based on business rules
- Churn management and retention workflows

Authentication: Requires API key authentication via X-API-Key header or api_key parameter

Endpoint: DELETE /api/external/v2/subscription-contracts/{id}
Version: 0.0.1

## Path parameters:

  - `id` (integer, required)
    Membership contract ID to cancel
    Example: 123456789

## Query parameters:

  - `api_key` (string)
    API Key (Deprecated - Use Header X-API-Key instead)

  - `cancellationFeedback` (string)
    Optional cancellation reason/feedback from customer
    Example: "Too expensive"

## Header parameters:

  - `X-API-Key` (string)


## Response 204 fields

## Response 400 fields

## Response 401 fields

## Response 404 fields

## Response 500 fields