When trying to save an item with custom multiplier of -1 I always get the error-message: "Error: page received incorrect data"
and details are: "Warning. Incorrect value for [Custom multiplier]"

Item is configured as follows:

Type: SNMPv1 Agent
SNMP OID: .1.3.6.1.2.1.2.2.1.16.5007
SNMP community: xxxx
SNMP port: 161
Key: ifOutOctets.5007
Type of information: Numeric (float)
Units : B
Use custom multiplier: Yes, Multiplier: -1
Update interval (in sec): 60
Flexible intervals (sec) No flexible intervals
Keep history (in days): 7
Keep trends (in days): 365
Status: Active
Store value: Delta (speed per second)
Show value: As Is

Do you need any further information?

Thanks,
Christian