O.2.2.2 Extensible SR SOP Classes
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#### O.2.2.2 Extensible SR SOP Classes

The concept of extensibility implies that a recipient may encounter Content Items, Value Types and Relationship Types that are unanticipated and unsupported and hence potentially unrenderable.

An implementation shall identify in its Conformance Statement which Content Items, Value Types and Relationship Types it supports.

Since it may not be possible to render the entire content in an unambiguous manner because of unrecognized content, an SCP intending to display or otherwise render an Extensible SR SOP Instance

- shall convey a warning in the rendering to indicate that unsupported content is present and that this may affect the meaning of the rendering

- shall identify in its Conformance Statement its behavior when encountering unsupported content

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