What is roc document?

ROC is as such Registration certificate issued to company by Registrar (again ROC), which will be not be required in case of individual loan applicants. But if the property for which home loan is  applied by Individual, is registered....... the alternative would be receipt of registration certificate of the property as issued by sub-registrar. 

The bank might have issued you general form as applicable to all the categories of applicants, so if it is not applicable in your case.... you may leave it.

You can get more clarification from the helpline number of the bank

Yes.

Some banks ll be avoid the loan process then they ask some unrequired documents....

So, You can move any other banks...