Hi Karan BK,

Odoo16: Add precompute=True option in your Computed fields to compute value before Record Create, UpTo 15.0 version Computed field value was computed after Record Create.

If you need more information then:

• whether the field should be computed before record insertion in database. Should be used to specify manually some fields as precompute=True when the field can be computed before record insertion.
• Inside odoo documatation ctrl+F and search precompute=True .
• https://www.odoo.com/documentation/16.0
  

Thank you