Query Records based on ReferencingEntity of OneToManyRelationship

Hi,

I want to fetch all records which are linked as onetomany to current record.

Therefore I fetch the entity information using retrieveentity and I get the OneToManyRelatipnship as described here: https://msdn.microsoft.com/en-us/library/microsoft.xrm.sdk.metadata.entitymetadata_members.aspx

But there I only have access to the ReferencingEntity which is written in lower case. And I cannot use this to fetch all records linked to the current record via OData.

Any Idea ?

Thanks