---
schema_version: "1"
id: 8e8c0cf90deb8a4aebef5f7aa3007edb2454aaad82fea57a66f70ab0bdaa1e83
title: Build More Robust Integrations with External Services Support for Enums
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/262-0-0/rn_ext_services_schema_enums.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_ext_services_schema_enums.htm&release=262.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 44400dd0f608227e1188be018ae3555ae6cc6ac4ca3d9071489c06286bce9fb7
description: You can now include enums in the OpenAPI specification that you use to create an external service. When you add the external service to a Flow action element, the enum appears as a picklist. In other Flow elements and in Apex, the enum appears as its base type. You can use either string or number as the enum value type. Support for enums is only available in external service registrations created after the Summer ’26 release.
products:
  - Cross Cloud
release: "262"
---
# Build More Robust Integrations with External Services Support for Enums

You can now include enums in the OpenAPI specification that you use to create an external service. When you add the external service to a Flow action element, the enum appears as a picklist. In other Flow elements and in Apex, the enum appears as its base type. You can use either string or number as the enum value type. Support for enums is only available in external service registrations created after the Summer ’26 release.

**Where:** This change applies to Lightning Experience and Salesforce Classic (not available in all orgs) in Enterprise, Performance, Unlimited, and Developer editions in API version 67.0 and later.

#### See Also

- [_Salesforce Help_: Schema Definitions](https://help.salesforce.com/s/articleView?id=platform.external_services_schema_def_definition.htm&type=5&language=en_US)
- [_Salesforce Help_: External Services OpenAPI 3.0 Schema](https://help.salesforce.com/s/articleView?id=platform.external_services_examples_openapi_3_0.htm&type=5&language=en_US)