Early Numbering is one of the Numbering concept in RAP which helps to set the primary key values at the time of creating instances.
In this video, I have explained internal managed option where RAP runtime itself generates primary key field values(only of type UUID) for us.
Global Feature control - √ • Global Feature Control in SAP RAP | Behavi...
SAP RAP playlist - • Managed Restful ABAP Programming Model (RAP)