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In the section that says <map> </map> is where the fragility identifier is specified. Where it says key is for MAEviz internal use and that must match exactly because the "Non-Retrofit Fragility ID Code" tells MAEviz this is the as-built fragility for the specified building. The second part where it says value is a fragility ID in your fragility dataset, this must match a fragility in your fragility dataset.
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