Copy incident items on Agreement Booking Incident not working

Hi Team,

We are facing below issue in Field Service.

When we create Agreement Booking Incidents manually, then the Incident items i.e. product/services/service tasks gets copied on the Agreement Booking Incidents.

But when we create the Agreement Booking Incident via a custom plugin, then the Incident items i.e. products/service tasks/ services are not copied on the Agreement booking incident.

Any help on the above issue would be appreciated.

Thanks,

Rekha