# LSEG World-Check One Case API

**Canonical:** https://apis.io/apis/lseg/lseg-world-check-one-case-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 Case 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, Screening, Compliance, and Cases. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.

Create, screen, update, archive, assign, link, and search screening cases; review and resolve screening results; enable ongoing screening and retrieve ongoing screening updates for KYC and third-party due diligence.

## Operations (30)

| Method | Path | Summary |
|---|---|---|
| HEAD | `/caseIdentifiers` | London Stock Exchange Group Check if a given caseId is available for use |
| GET | `/caseReferences` | London Stock Exchange Group Return the CaseReference (caseId, caseSystemId) for… |
| POST | `/cases` | London Stock Exchange Group Create a new case |
| POST | `/cases/screeningRequest` | London Stock Exchange Group Perform synchronous screening for a new case |
| PUT | `/cases/{caseSystemId}` | London Stock Exchange Group Update an existing Case by its caseSystemId |
| PATCH | `/cases/{caseSystemId}` | London Stock Exchange Group Partial update an existing Case by its caseSystemId |
| GET | `/cases/{caseSystemId}` | London Stock Exchange Group Fetch Full Case Details |
| DELETE | `/cases/{caseSystemId}` | London Stock Exchange Group Delete a Case |
| POST | `/cases/{caseSystemId}/screeningRequest` | London Stock Exchange Group Request full or delta screening for an existing Case |
| PUT | `/cases/{caseSystemId}/ongoingScreening` | London Stock Exchange Group Enable OGS for a Case |
| DELETE | `/cases/{caseSystemId}/ongoingScreening` | London Stock Exchange Group Disable OGS for a Case |
| PUT | `/cases/{caseSystemId}/archive` | London Stock Exchange Group Archive a Case |
| DELETE | `/cases/{caseSystemId}/archive` | London Stock Exchange Group Unarchive a Case |
| POST | `/cases/bulk/archive` | London Stock Exchange Group Bulk Update Archive States |
| POST | `/cases/bulk/assign` | London Stock Exchange Group Bulk Update Case Assignments |
| POST | `/cases/bulk/delete` | London Stock Exchange Group Bulk Delete Cases |
| POST | `/cases/bulk/move` | London Stock Exchange Group Bulk Move Cases Between Groups |
| POST | `/cases/bulk/ongoingScreening` | London Stock Exchange Group Bulk Update Ongoing Screening States |
| POST | `/cases/bulk/link` | London Stock Exchange Group Bulk Update Case Links |
| GET | `/cases/{caseSystemId}/results` | London Stock Exchange Group Get collection of Results for a Case by its… |
| PUT | `/cases/{caseSystemId}/results/review` | London Stock Exchange Group Add a review remark to the specified result IDs for… |
| PUT | `/cases/{caseSystemId}/results/resolution` | London Stock Exchange Group Resolves a list of results |
| POST | `/cases/ongoingScreeningUpdates` | London Stock Exchange Group Get ongoing screening updates |
| PUT | `/cases/{caseSystemId}/assignee` | London Stock Exchange Group Assign the Case to a User |
| DELETE | `/cases/{caseSystemId}/assignee` | London Stock Exchange Group Unassign a Case |
| POST | `/cases/search` | London Stock Exchange Group Search for Cases based on specified criteria using… |
| POST | `/cases/summaries` | London Stock Exchange Group User activity monitoring. Initial request |
| POST | `/cases/summaries/cursor` | London Stock Exchange Group User activity monitoring. Subsequent request |
| POST | `/cases/saveAndScreen` | London Stock Exchange Group Save and screen multiple cases |
| POST | `/cases/screeningStatus` | London Stock Exchange Group Retrieve case screening status and aggregated… |

## 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-case-api-openapi.yml
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/lseg/refs/heads/main/overlays/london-stock-exchange-group-case-api-overlay.yaml

## Other LSEG APIs (12)

- [LSEG Intelligent Tagging (Open PermID) API](https://apis.io/apis/lseg/lseg-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 Linked Cases API](https://apis.io/apis/lseg/lseg-world-check-one-linked-cases-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, Screening, Compliance, Cases

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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-case-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/lseg/.