After updating to Zabbix to version 6.0.6 - we have noticed some SNMP devices are showing as $1interface and does not give the full value /name it used to. 
Browsing for solutions the the template has $1 sign but and it needs to be replaced or add macros with it https://www.zabbix.com/forum/zabbix-help/444501-interfaces-name-shown-as-1-after-upgrading-to-zabix-6-0-0 - it mentions to modify your template to use the {#xxx} macros instead.

We not sure where exactly to do this if you could please let us know how can we resolve this. 

Also attaching the template for your reference.