If you want to transfer money from one SBI Bank account to another SBI bank account via online SBI service, follow my steps.
First login your Online SBI Account.
Go to Payments/Transfer Section.
Choose Fund Transfer in jump to section and click Go button.
Then choose Third Party Transfer.
Click here to add a new Intra-Bank Beneficiary.
Enter your Online SBI Profile Password.
Enter the Beneficiary details like
Click submit option.