Hi,
I have added below code and now I am getting the value of BP Relation Partner in new Value Context Node created.
CHECK gr_owner IS BOUND." get the current entity of other context node
lr_entity ?= gr_owner->btpartneroemendcust->collection_wrapper->get_current( ).
CHECK lr_entity IS BOUND.
lv_text = lr_entity->get_property_as_string( 'PARTNER_NO' ).
lr_dyn_query = cl_crm_bol_dquery_service=>get_instance( 'BuilHeaderAdvancedSearch' ).
lr_dyn_query->add_selection_param( iv_attr_name = 'PARTNER'
iv_sign = 'I'
iv_option = 'EQ'
iv_low = lv_text
iv_high = space ).
lr_bp_col = lr_dyn_query->get_query_result( ).
lr_bp_entity = lr_bp_col->get_current( ).
CHECK lr_bp_entity IS BOUND.
lr_rel_col = lr_bp_entity->get_related_entities( iv_relation_name = 'BuilRelationshipRel' ).
CHECK lr_rel_col IS BOUND.
lr_iterator = lr_rel_col->get_iterator( ).
CHECK lr_iterator IS BOUND.
lr_bp = lr_iterator->find_by_property( iv_attr_name = 'RELATIONSHIPCATEGORY'
iv_value = 'ZECUST' ).
CHECK lr_bp IS BOUND.
lr_bp_find ?= lr_bp.
CHECK lr_bp_find IS BOUND.
lr_bp_find = lr_rel_col->find( iv_entity = lr_bp_find ).
value = lr_bp_find->get_property_as_string( 'PARTNER2' )