After upgrade from 3.0.3 to 3.2.0 in server log appeared messages like
10266:20160919:125617.813 error reason for "server:iptab.traf[ACCEPT,TCP_08080]" changed: Received value [1216122185] is not suitable for value type [Numeric (float)]

But Store value - is Delta (speed per second)
according to - 'Note: As this calculation may produce floating point numbers, it is recommended to set the 'Type of information' to Numeric (float), even if the incoming raw values are integers.' https://www.zabbix.com/documentation/3.2/manual/config/items/item
Type of information - is set to Numeric (float)