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--- wiki:2_fair-building-blocks:0_pid:start [2026/08/14 09:30] – [Description] esoeding
+++ wiki:2_fair-building-blocks:0_pid:start [2026/08/14 09:54] (current) – [Recommendation] esoeding
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 Status: ~~LASTMOD~~ Under development
-Persistent Identifiers used in metadata should be selected according to transparent technical, organisational and community-related criteria. Where an established PID system exists for a particular entity type, this system should be used instead of locally defined identifiers or unstructured textual descriptions.
+Persistent Identifiers (PIDs) are an important building block of any FAIR data ecosystem. There are numerous PID types existing for a variety of diverse, but also similar applications. As such it is difficult to decide, whic PID type to adopt. This decision process should use transparent technical, organisational and community-related criteria and processe. Where an established PID system exists for a particular entity type, this system should be used instead of locally defined identifiers or unstructured textual descriptions.
-The recommendation supports the consistent identification of entities such as research outputs, people, organisations, instruments and physical samples. It thereby facilitates the exchange, aggregation and linking of metadata across repositories and other research infrastructures.
+This recommendation explains, what criteria can be employed to select PID types for particular applications.
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 =====Recommendation ====
-[shortened from below]
+Helmholtz Earth and Environment data providers and operators of research information systems should use established, globally unique and resolvable PID types whenever metadata refers to an entity type for which a suitable PID system is available.
-[Format: Wer! macht was! wo! wann! unter welchen Voraussetzungen!]
+The PID system should be selected according to documented criteria concerning scope, community adoption, governance, sustainability, metadata, interoperability and technical operation.
 =====Binding Convention: =====