2.1 This chapter provides some general information and rules on what needs to be done to conduct enterprise surveys. However, these procedures can also be applied to other business or household surveys if conducted for balance of payments purposes. Many economies continue to use a bank international transactions reporting system (ITRS); however, some economies are moving to survey-based collection systems. Individual economies decide on the general approach to adopt, but it is considered that a survey-based system is better able to collect the data for the balance of payments and IIP as transactions become increasingly complex, while in some more “basic” circumstances the ITRS is still effectively used.