Greetings Keerthan,
That depends on:
1) The frequency that you input Measurement Documents in
2) Your Call Horizon on the Maintenance Plans
3) Your Scheduling Period in your IP30 Deadline Monitoring variant
Generally, SAP will adjust the schedule based on the Measurement Documents entered for the counter (1) to account for readings (usage) which are higher or lower than estimated.However, it will NOT reschedule any Orders already called. So to make sure the dates are usually adjusted to your usage, you want frequently input MDs, a high Call Horizon and a short Scheduling Period.
SAP will determine a scheduled due date for the Order based on the Annual Estimate and the readings. So, if the due date is in 5 days and you are on a call horizon of 100% and a Scheduling period of 3 days, for example:
a) if you do not input Measurement Documents from Day 0 onwards, the Order will be generated due for Day 5 when you run the IP30 on Day 2
b) if you input a Measuring Document on Day 1 indicating that less than estimated or no fuel was used, the due date and call date may be pushed into the future and the Order will be generated after Day 2.
c) if you input the MD after Day 2, this Order will already have been called and will not be rescheduled, but subsequent calls might.