I'm getting a value from SNMP OID bgpPeerLastError who comes in hex, I aplied the preprocessing hex to decimal, but he returns the error:
Item preprocessing step #1 failed: cannot convert value "06 03" of type "string" from hexadecimal format: invalid value format

The value is:
OID:
.1.3.6.1.2.1.15.3.1.14.....
Value [OCTET STRING]:
0x06 03
Raw Value [OCTET STRING]:
HEX: 06 03