entity-relationship-eligibility.md

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Entity relationship eligibility (Developer Guide for Dynamics 365 Customer Engagement (on-premises)) | MicrosoftDocs	The article lists the messages that you can use to determine whether entities can participate in entity relationships		10/31/2017	pehecke			article	Dynamics 365 Customer Engagement (on-premises)	determining whether entities can participate in entity relationships, messages for entity relationship eligibility, determining whether entities can participate in entity relationships entities confirming that entities can participate in entity relationships, messages for	960606ca-ff63-4b82-9fd6-2d2243a78043	JimDaly	jdaly	developer

Entity relationship eligibility

Before you create an entity relationship you should confirm whether the entity is eligible to participate in the relationship. The following table lists the messages that you can use to determine whether entities can participate in entity relationships.

Message	Web API Operation	SDK Assembly
CanBeReferenced Checks whether the specified entity can be the primary entity (one) in a one-to-many relationship.		xref:Microsoft.Xrm.Sdk.Messages.CanBeReferencedRequest
CanBeReferencing Checks whether the specified entity can be the referencing entity (many) in a one-to-many relationship.		xref:Microsoft.Xrm.Sdk.Messages.CanBeReferencingRequest
CanManyToMany Checks whether the entity can participate in a many-to-many relationship.		xref:Microsoft.Xrm.Sdk.Messages.CanManyToManyRequest
GetValidManyToMany Returns the set of entities that can participate in a many-to-many relationship.		xref:Microsoft.Xrm.Sdk.Messages.GetValidManyToManyRequest
GetValidReferencedEntities Returns the set of entities that are valid as the primary entity (one) from the specified entity in a one-to-many relationship.		xref:Microsoft.Xrm.Sdk.Messages.GetValidReferencedEntitiesRequest
GetValidReferencingEntities Returns the set of entities that are valid as the related entity (many) to the specified entity in a one-to-many relationship.		xref:Microsoft.Xrm.Sdk.Messages.GetValidReferencingEntitiesRequest

See also

Customize Entity Relationship Metadata
Extend the Metadata Model for Dynamics 365 Customer Engagement (on-premises)
Entity Relationship Metadata
Entity Relationship Messages
Entity Relationship Behavior
Create one-to-many or many-to-one entity relationships overview

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