# LSEG World-Check One Linked Cases API

**Canonical:** https://apis.io/apis/lseg/lseg-world-check-one-linked-cases-api/  
**Provider:** LSEG — https://apis.io/providers/lseg/  
**Base URL:** https://api-worldcheck.refinitiv.com/v2  
**Documentation:** https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api

LSEG World-Check One Linked Cases API is one of 16 APIs that [LSEG](https://apis.io/providers/lseg/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include KYC, Cases, and Compliance. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.

Create, retrieve, and delete relationships between screening cases.

## Operations (3)

| Method | Path | Summary |
|---|---|---|
| POST | `/cases/{caseSystemId}/relationship/{relationshipType}` | London Stock Exchange Group Retrieve the list of case relationships |
| PUT | `/cases/{caseSystemId}/relationship/{relationshipType}` | London Stock Exchange Group Create links between cases |
| DELETE | `/cases/{caseSystemId}/relationship/{relationshipType}` | London Stock Exchange Group Delete links between cases |

## Machine-readable artifacts (3)

- **Documentation** — https://developers.lseg.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/documentation
- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/lseg/refs/heads/main/openapi/london-stock-exchange-group-linked-cases-api-openapi.yml
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/lseg/refs/heads/main/overlays/london-stock-exchange-group-linked-cases-api-overlay.yaml

## Other LSEG APIs (12)

- [LSEG Intelligent Tagging (Open PermID) API](https://apis.io/apis/lseg/lseg-api/)
- [LSEG World-Check One Case API](https://apis.io/apis/lseg/lseg-world-check-one-case-api/)
- [LSEG World-Check One Media-Check API](https://apis.io/apis/lseg/lseg-world-check-one-media-check-api/)
- [LSEG World-Check One Smart Filter API](https://apis.io/apis/lseg/lseg-world-check-one-smart-filter-api/)
- [LSEG World-Check One Audit API](https://apis.io/apis/lseg/lseg-world-check-one-audit-api/)
- [LSEG World-Check One Case Rating API](https://apis.io/apis/lseg/lseg-world-check-one-case-rating-api/)
- [LSEG World-Check One Group API](https://apis.io/apis/lseg/lseg-world-check-one-group-api/)
- [LSEG World-Check One User API](https://apis.io/apis/lseg/lseg-world-check-one-user-api/)
- [LSEG World-Check One Reference API](https://apis.io/apis/lseg/lseg-world-check-one-reference-api/)
- [LSEG World-Check One Client Watchlist API](https://apis.io/apis/lseg/lseg-world-check-one-client-watchlist-api/)
- [LSEG World-Check One Reporting API](https://apis.io/apis/lseg/lseg-world-check-one-reporting-api/)
- [LSEG World-Check One Upcoming API](https://apis.io/apis/lseg/lseg-world-check-one-upcoming-api/)

## Tags

KYC, Cases, Compliance

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/lseg/lseg-world-check-one-linked-cases-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/lseg/.