Re: Set a Valid  reference to object

First you need to get the root entity using cl_crm_bol_core method get_root_entity by passing GUID and get the relation from GENIL_MODEL_BROWSER and get your relation.

lr_core ?= cl_crm_bol_core=>get_instance( ).

lr_root ?= lr_core->get_related_entity( iv_object_name = 'root entity  name'  iv_objkey = 'GUID' ).

Regards,

Deepika.