[H series] What will happen if I process device HA twice?

Zyxel_Melen

If you have assigned any license to the slave after first device HA deployed, like Nebula Professional Pack license, the licenses will be transferred to master again after the device HA been deployed second time.

You may transfer the license back to slave by yourself.

Reference FAQ:

What can I do if I accidentally assign too many licenses to one device? The licenses are active. — Zyxel Community

If you encounter an issue and need assist to transfer license, please contact Zyxel support or send a message to @Zyxel_CSO.