Parallels Cloud Server has ability to provide values about CT/VM via SNMP.

Usually it looks like this:
PARALLELS-RMOND-SMI::rmondVeId."1" = STRING: 1
PARALLELS-RMOND-SMI::rmondVeId."10" = STRING: 10
PARALLELS-RMOND-SMI::rmondVeId."101" = STRING: 101
PARALLELS-RMOND-SMI::rmondVeId."

{011f0560-ec83-432f-b107-cb459cfee00f}" = STRING: {011f0560-ec83-432f-b107-cb459cfee00f}

PARALLELS-RMOND-SMI::rmondVeId."

{ac54dcaa-1d64-42fc-8d5e-c88e197650ae}" = STRING: {ac54dcaa-1d64-42fc-8d5e-c88e197650ae}

Documentation about Low Level discovery describe (https://www.zabbix.com/documentation/2.0/manual/discovery/low_level_discovery)
example where SNMPINDEX are numerical values:

$ snmpwalk -v 2c -c public 192.168.1.1 IF-MIB::ifDescr
IF-MIB::ifDescr.1 = STRING: WAN
IF-MIB::ifDescr.2 = STRING: LAN1
IF-MIB::ifDescr.3 = STRING: LAN2

so Zabbix creates mapping SNMPINDEX to SNMPVALUE like this:

{#SNMPINDEX} -> 1 {#SNMPVALUE} -> WAN {#SNMPINDEX}

-> 2

{#SNMPVALUE} -> LAN1 {#SNMPINDEX} -> 3 {#SNMPVALUE}

-> LAN2

But it is not so in my case. SNMPINDEX is not a numerical value.
Could you modify Zabbix to have ability to enumerate SNMP OID with non numerical values?

Link to thread on forum - https://www.zabbix.com/forum/showthread.php?t=45075

P.S. ask me if you want additional details