---
title: "sysSdmSchemaVersionRegistry"
url: "https://altiumdeveloper.github.io/platform-api-docs/reference/system-design/operations/queries/sys-sdm-schema-version-registry"
bounded_context: "System Design"
kind: "queries"
experimental: true
deprecated: false
---

# sysSdmSchemaVersionRegistry

**EXPERIMENTAL**

### Experimental

> **Caution:** Not production-ready. It may change or be removed without notice. See [Lifecycle](https://altiumdeveloper.github.io/platform-api-docs/guides/lifecycle.md).

Retrieves all available schema versions

```graphql
sysSdmSchemaVersionRegistry: [SchemaRegistryEntry!]!
```

### Type

#### [`SchemaRegistryEntry`](https://altiumdeveloper.github.io/platform-api-docs/reference/system-design/types/objects/schema-registry-entry.md) object **EXPERIMENTAL**