[Knowledge] virtual-network: ## Advisory Notes — Stage 1: Managed Identity - **[Stabilit...

## Knowledge Contribution

**Type:** Pitfall
**File:** `knowledge/services/virtual-network.md`

### Context
## Advisory Notes — Stage 1: Managed Identity

- **[Stability]** The identity module uses API version `2023-07-31-preview`; preview APIs may introduce breaking changes or be retired — consider pinning to the GA version `2023-01-31` for production deployments.

- **[Security]** Deployment outputs (client ID, principal ID) are written to a local JSON file with no access controls; in CI/CD pipelines, prefer storing these in a Key Vault or using deployment output references directly to avoid credent

### Rationale
## Advisory Notes — Stage 1: Managed Identity

- **[Stability]** The identity module uses API version `2023-07-31-preview`; preview APIs may introduce breaking changes or be retired — consider pinning to the GA version `2023-01-31` for production deployments.

- **[Security]** Deployment outputs (client ID, principal ID) are written to a local JSON file with no access controls; in CI/CD pipelines, prefer storing these in a Key Vault or using deployment output references directly to avoid credent

### Content to Add
```
## Advisory Notes — Stage 1: Managed Identity

- **[Stability]** The identity module uses API version `2023-07-31-preview`; preview APIs may introduce breaking changes or be retired — consider pinning
```

### Source
Build advisory review

Read `knowledge/services/virtual-network.md` and compare its existing content with the issue’s advisory notes. Add the requested Managed Identity guidance there; done means the file includes the requested advisory content, though the issue’s supplied text appears truncated.

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