In regards to https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/db/oracle_odbc/template_db_oracle_odbc.yaml#2026

              uuid: 9c87a9089a19468f85eb1d3c28893092
              name: 'ASM ''{#DG_NAME}'': Free size'
              type: DEPENDENT
              key: 'oracle.asm_used_pct["{#DG_NAME}"]' 

The item description for key oracle.asm_free_size was copied forward from line 1980. The item description for key oracle.asm_used_pct should be "Usage percent", "Used percent", or such. The current description implies the opposite meaning of the metric.