If sites are fully isolated (L2), then having the same VLAN scheme for each of your sites sounds fine.
It also depends a bit how complex your sites are; not sure if there is a single best practice, however sharing VLAN IDs (or VLAN Names) across different sites will make it easier to share policies that put clients in a specific VLAN.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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