With reference to ABB documentations which warranty was expired on 12th March 2007. Therefore to continue our support to the customer’s at ABB. We require from you to provide us the information the scope of work.
This is not very clear to me. Do you want to say something like this?
According to the ABB documentation, the warranty expired on 12th March 2007. Therefore, to continue our support at ABB, we require details of the scope of the work.