Dear Ramesh.R,
please also see Routes ECC Vs EWM
You can either:
a.) determine or enter Route in ERP. Then this is NOT changeable in EWM
b.) determine or enter Route in EWM. But then this route is NOT transferred back to ERP.
What was describe above as GEOROUTE is a separte field which is only used for CRM processes. But this field is not the route which you will see in ERP as route on the delivery.
I also wonder why you would need the route in ERP. Either the route is relevant in ERP then I would assume that you determine it there. Or it is not and it is only relevant for EWM then you determine it there but then why would you need it in ERP?
Best regards
Markus