# Backend Design: ECR-047 FunnelDefinition Write

| Field | Value |
|-------|-------|
| ID | BD-2026-047 |
| Status | **Closed** |
| Coding | **Closed** |
| Migration | `000056_ops_funnel_definition_write` |

## Boundary

```text
POST/PUT /api/v1/admin/analytics/funnel-definitions*
Permission: admin.growth.write
Fields: code, title, active
system=true: code immutable
Audit: growth.funnel_definition.create|update
No C-end route · no DELETE
```

## Out

ReportTemplate · Prompt · soft-delete · auto ECR-048