Considerations and Limitations

Apex SDK for Slack (pilot) is introduced in Winter '22 and has a number of limitations. The following features are not currently supported.

Admin client access
Dependent fields or picklists
Enterprise installs
Events for workflows
Events for Real Time Messaging (RTM) API
Field-level validation (only validation via input type is supported)
Localization (see localization limitations)
Packaging
Private metadata on views
Rich text fields (not formatted in Slack)
Scope limitations during installation (see scope limitations)
System-provided actions or data providers
Web API methods (only those discussed in Apex are supported)
- chat.unfurl
- admin.*
- files.remote.*
- workflows.*