- **Maximum of 20 linked projects:** Each origin project can have up to 20 linked projects. A linked project can be associated with any number of origin projects.
- **System indices:** Indices such as `.security` and `.fleet-*` are excluded from {{cps}} results by design.
- **New projects only:** During technical preview, only newly created projects can function as origin projects.
- **{{anomaly-detect-cap}} and transforms:** During technical preview, ML {{anomaly-jobs}} and transforms are not supported with {{cps-init}}. They continue to run on origin project data only.
- **{{dfanalytics-jobs-cap}}:** {{dfanalytics-jobs}} are not supported with {{cps-init}}. They continue to run on origin project data only.
- For {{esql}} limitations specific to {{cps-init}}, refer to [ES|QL with {{cps}}](elasticsearch://reference/query-languages/esql/esql-cross-serverless-projects.md#limitations).