After upgrading from Zabbix 6 to Zabbix 7.0.5, the following entries appear in the Zabbix server log: Cannot process duplicate host 'some hostname' in autoreg_host table. The nodes that the system reports do not fall into the autoregistration rules. At the moment, the system has been upgraded to Zabbix 7.0.15, the problem exists.

I solved it by manually deleting the nodes that the system reports from the autoreg_host table