The Maintenance task identification DEX describes a PLCS model for describing maintenance tasks to be performed for an installation,
versions of the tasks, valid assignments of task versions to parts as well as assignments of task versions to corresponding
breakdown elements (configuration items). A task is represented by the PLCS entity task_method. A task has associated attributes
valid for all versions of the task. Attributes associated to a particular version only are consequently valid for this version
only. A maintenance task can be common for several parts. The task_method_version_assignment connects specific tasks to specific
parts. Attributes specific for the unique task-part association are connected to the task_method_version_asignment (not included
in the overview diagrams but included in the detailed diagrams).