Maintenance Plan Call Dates called earlier than Call Horizon

Hi,

May I inquire for assistance successful explaining wherefore the Call Date for the archetypal Call Object enactment was called erstwhile determination is simply a Call Horizon of 45 DAYS? The details of the Maintenance Plan are arsenic follows:

Maintenance Plan created and scheduled : 29.01.2024

Cycle Unit : 1000 HR

Call Horizon : 45 DAYS

Start Counter Reading : 75830 (counter speechmaking erstwhile Maintenance Plan was created)

First Planned Date : 28.05.2024

First Call Date : 17.03.2024

Scheduling indicator : 3 - Performance Based

What is the ground of the Call Date? Shouldn't it beryllium based connected the Call Horizon? Thank you