Independent validations 
Independent validations check the meter reading result from one register only. Results can undergo either fixed or variable validations. Fixed independent validations are performed automatically by the system. Variable validations are carried out according to the settings you establish in Customizing under s.
Previous result implausible
The system validates meter reading based on previous meter reading results. The system first checks whether the meter reading result of the previous reading is plausible. If so, the current result cannot be given plausible status. The result from previous reading must be corrected to provide a basis for further validations.
Fixed value deviation validation
When an inactive or blocked installation is reconnected or when a device is installed after being certified, the system checks whether any consumption recorded exceeds a maximum limit. You define this limit in Customizing under
Resetting register validation
In the case of resetting registers, the system checks whether the number of times the register was reset matches the number of meter readings.
Zero consumption validation
The system checks whether no consumption was registered and whether this occurred during the zero consumption interval.
Permitted number of customer meter readings or estimations
The system checks whether the permitted number of successive meter readings has been exceeded.
Absolute, relative, and floating tolerance limits
The system uses the expected consumption from the previous period to check whether the current consumption is within tolerance limits. You enter the base period category and the comparison period in the installation. You define the number of comparison periods in Customizing under
Usage hours in relation previous period or fixed value
Usage hours are obtained by dividing the period consumption by the installed demand. You define the value in Customizing under
Current usage hours are checked against the usage hours of the previous period. The usage hours must also not exceed a fixed value obtained by multiplying the number of days since the last meter reading by 24 hours.
Maximum/minimum contract demand
The system checks whether the demand falls below or exceeds a certain value. You define this value in Customizing under
Meter overflow
The system checks whether the current reading is lower than the last reading.