# Create Relationship Definition

`CreateRelationshipDefinition`

`POST /api/relationshipdefinitions`

- [OpenAPI fragment](https://www.lusid.com/docs/api/lusid/endpoints/relationship-definitions/CreateRelationshipDefinition.json)
- [Rendered page](https://www.lusid.com/docs/api/lusid/endpoints/relationship-definitions/CreateRelationshipDefinition)

Create a new relationship definition to be used for creating relationships between entities.

## Referenced schemas

- [CreateRelationshipDefinitionRequest](https://www.lusid.com/docs/api/lusid/schemas/CreateRelationshipDefinitionRequest.txt)
- [RelationshipDefinition](https://www.lusid.com/docs/api/lusid/schemas/RelationshipDefinition.txt)

[< Relationship Definitions](https://www.lusid.com/docs/api/lusid/endpoints/relationship-definitions/llms.txt)