The following lines contain the word 'select', 'insert', 'update' or 'delete':
select 1 into dummy from dual where not exists
(select 1
from bom_department_classes
where department_class_code = x_department_class_code
and organization_id = x_org_id);
select 1 into dummy from dual where not exists
(select 1
from bom_departments
where organization_id = x_org_id
and department_class_code = x_department_class_code);