Hi Raju,
First I would suggest adding a primary key like rec_id, which doesn’t hold any business value, but is just a unique identification of each row. Then I would suggest adding that ID as the primary key and also add customerID as the report key. By this configuration, whenever you lock any row based on account name, all the rows have the same customer ID will be blocked.
If you would like any more help with this, please reach out to your CA Account Manager and they will be able to provide a resource from pre-sales or services to help you implement this scenario. If you do not know who your CA Account Manager is, please call CA Customer Care at one of these numbers and they will be able to tell you: Contact CA Support - CA Technologies
Best regards,
Taylor