Exhibit shows the 8 different fields for Block header information. Field 1 - RRPS shows the type of processing function. Field 2 - three alpha/numeric characters that identifies a block of work. Field 3 - document locator number. Field 4 - transaction code. Field 5 - Master File Tax code. Field 6 - tax period. Field 7 - batch number. Field 8 - transaction date.