Important note: This paragraph is only interesting for software engineers, who use our API-interface.
In the ressource "userreports" of our REST API, we have made some changes for the sake of maximum backward compatibility. As described above it was formerly necessary to deduct the overtime reduction from the difference between the target and actual hours in order to obtain the correct final difference in the hours account. As this is no longer necessary, we now fill up the fields "count_ot_reduction" (overtime reduction of a day) and "sum_reduction" (for weeks, months and years) with "null".
Instead of the old fields, the amount of overtime reduction which has been used (and has already been included in the hours account), does now get output in the fields "count_reduction_used" (reduction in a day) and "sum_reduction_used" (for weeks, months and years). The new fields are documented in our API documentation.