Hi,
"Does that mean there is no need to assign a default party entitled to dispose to warehouse?"
you should, but only in a single client warehouse (means: not, if the warehouse is run by a logistic service provider and he has material for several customers in this warehouse).
"During Inbound delivery will vendor be automatically assigned as party entitled to dispose?"
The vendor is never the party entitle to dispose.
"Is identification type CRM011 a prerequisite in business partner to assign a vendor as party entitled to dispose in inbound delivery?"
Yes, if I understand the question right.
"The link between plant and party entitled to dispose is vendor"
It can also be a customer.
"I already have a vendor in ECC that has a plant assigned to it,i can use it to create party entitled to dispose."
Yes.
"But what, if I don't have any such vendor in ECC?What is the best practice?Should I create a dummy vendor with plant assigned to it in ECC and make it my party entitled to dispose in EWM ?"
You need for EWM a vendor and a customer in ERP. Of of the BPs for it you assign the role CRM011 and this will be your default party entitled to dispose.
"Or I can use any vendor as default to create one?"
You wouldn't want to do that.
And you should also not ask this quesiton here AND open a new discussion with the same question.
Brgds
Juergen