Extensible select and enumeration types

and their elements in schema SPECIFICATION_BASED_CONFIGURATION_XIM taking into account BASED_ON types


 characterized_product_definition - EXTENSIBLE SELECT
          product_definition
          product_definition_relationship

 configured_effectivity_item - EXTENSIBLE GENERIC_ENTITY SELECT
          product_definition

 date_and_time_item - EXTENSIBLE SELECT
          event_occurrence

 date_item - EXTENSIBLE SELECT
          event_occurrence

 effectivity_item - EXTENSIBLE SELECT
          configuration

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          externally_defined_effectivity_or_ineffectivity_assignment__aea

 groupable_item - EXTENSIBLE GENERIC_ENTITY SELECT
          package_product_concept_feature
          product_concept_feature

 identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          product_class
          product_concept_feature