Section ITI-TF 4.1.14 defines the composition and handling of Extra Metadata, ebRIM Slots not defined in XD* metadata. This test tests the required handling by the XDS Document Registry actor.
There are two test sections defined: support and no_support. The XDS Document Registry actor is required to implement Extra Metadata by either
Accepting, not storing and returning the XdsExtraMetadataNotSaved warning code
Accepting, storing and returning the extra metadata in query responses
The two sections align with these two approaches the Registy actor can support. Only one of the will succeed (they are mutually exclusive). When logging results in Gazelle, upload the results for both sections.