Hi @MX ,
SES ESL integration is a per-AP feature. If you use a template, ESL needs to be enabled on a template level, and a V:Cloud URL needs to be set (assuming that you are using the direct connection to V:Cloud). Then, ESL functionality must be activated on individual APs within each child network.
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There is no impact on BLE functionality for APs that don't have ESL enabled unless you explicitly turn off BLE on the template level.