Hi Subodh,

Please follow the below steps and links with the help of these steps and link you can solve your problem, it may be helpful to you.

Order of Execution in Salesforce:
1.Loads the original record from DB.
2.Loads the new record field values and overwrite the old values.
3.If you are using Standard UI, system validation rules will be execute.
4.Executes all before triggers.
5.Executes all user defined validation rules.
6.Saves the record to the database, but does not commit yet.
7.Executes all After trigger.
8.Executes Assignment Rules.
9.Executes Auto-Response Rules.
10.Executes Workflow Rules.
11.If there are any workflow updates, update the record again.
12.If the record was updated with workflow field updates, fires before update triggers and after 13.update triggers one more time, in addition to standard validations. Custom validation rules and duplicate rules are not run again.
14.Executes Processes.
15.Executes Escalation Rules.
16.Executes Entitlement Rules.

Link: http://www.x2od.com/2008/11/09/salesforce-order-of-execution.html
Link: https://www.biswajeetsamal.com/blog/order-of-execution-in-salesforce/


I hope you find the above solution helpful. If it does, please mark as Best Answer to help others too.

Thanks and Regards,
Deepali Kulshrestha