The GDS may include additional optional behaviour which this example illustrates. What is required is the availability of all AliasNamesin the mandatory TagVariablesand Topicsfolder, but a GDS may also choose to replicate or even merge the additional AliasNameCategoryTypeinstances from the Serversthat have registered. Figure 1provides an illustration of a GDS that merged the AliasNameCategoryinstance into a tree. It is required that AliasNameCategoriesbe aggregated by the GDS, but the structure of these categories is not defined.

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Figure A-7– GDS with merged AliasNames example

For additional information about a GDS and AliasNamessee Annex B.