Extensible select and enumeration types

and their elements in schema Functional_unit_requirement_allocation_arm taking into account BASED_ON types


 activity_method_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Test_method_based_parameter_assignment

 analytical_model_port_assignment_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Functional_unit_usage_view_terminal_definition

 approval_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Certification
          Contract

 assigned_name_select - EXTENSIBLE GENERIC_ENTITY SELECT
          External_class_library

 certification_item - EXTENSIBLE GENERIC_ENTITY SELECT

 classification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Product
          Product_version
          Product_view_definition

 classified_element_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Product
          Product_version
          Product_view_definition

 contract_item - EXTENSIBLE SELECT

 date_or_date_time_item - EXTENSIBLE SELECT
          Certification
          Contract
          Organization_or_person_in_organization_assignment
          Security_classification_assignment

 documented_element_select - EXTENSIBLE SELECT
          Analytical_model_definition
          Model_parameter
          Property_value_representation

 event_item - EXTENSIBLE GENERIC_ENTITY SELECT

 extended_value_with_unit - EXTENSIBLE SELECT
          Value_limit
          Value_range
          Value_with_unit

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Digital_analytical_model_vector_port
          Document_definition
          File
          User_defined_library_or_dictionary

 groupable_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Group_relationship

 identification_item - EXTENSIBLE SELECT
          Approval_status
          Contract
          Organization
          Product_class
          Requirement
          Requirement_version
          Requirement_view_definition
          Security_classification

 measure_value - EXTENSIBLE SELECT
          any_number_value
          any_string_value
          length_measure
          plane_angle_measure

 organization_or_person_in_organization_item - EXTENSIBLE SELECT
          Contract
          Identification_assignment
          Security_classification_assignment

 project_item - EXTENSIBLE SELECT

 property_assignment_select - EXTENSIBLE SELECT

 represented_definition - EXTENSIBLE SELECT
          Assigned_property
          Independent_property

 requirement_assignment_item - EXTENSIBLE SELECT
          Functional_unit

 requirement_source_item - EXTENSIBLE SELECT

 security_classification_item - EXTENSIBLE SELECT

 string_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Approval
          Approval_relationship
          Approval_status
          Certification
          Contract
          Date_or_date_time_assignment
          Identification_assignment
          Organization_relationship
          Person_in_organization
          Project
          Project_assignment
          Project_relationship