Reservation Codeunit

Hello!

I need to delete and create a new reservation via code. I want to use Standard Codeunits for this purposal.

I've seen Reservation Management Codeunit but I've realised that some functions are using Entry Summary table for setting Reservations into Reservation Entry table. However, I don't know what's the best way for doing it.

Particularly, I need to create a function to replace an item in several Reservation Entries and Purchase Lines, However, I don't want to miss anything during the process, so Standard Codeunits would be able to help me.

Thank you.