Context
Change Type: API change
Product area: Platform services
Component: REST API
Deployed at: eu.latest.cumulocity.com
Technical details
Build artifact: cumulocity (2026.69.0)
Internal ID: MTM-66224
Description
Validation has been added for the “User/App ID – Constant value” field used during SSO authentication when the “Use constant value” option is enabled.
When a constant username is configured for SSO users (optional setting), it now follows the same validation rules as a standard username:
Validation Rules
- String length: 1–1000 characters
- Must not contain:
- Whitespace
- Slashes
- Any of the following characters:
+,$,:
This change ensures consistency in username validation and prevents invalid values from being configured for shared SSO accounts.