Hi Lamarana,
Does your Dataset by any chance use a Category Combination to enable the capture of multiple versions of the form (eg often used to disaggregate data capture by donor or funding program)? Earlier versions of DHIS2 didn’t take this into account when calculating completeness rates, so if this bug hasn’t been fixed, then you may find that the completeness calculation will register multiple forms captured in the numerator (eg two different donors’ forms), but will still only count the overall Dataset once in the denominator (expected reports).
Cheers, Sam.