The Federal Board of Revenue (FBR) has issued the explanation regarding the latest situation pertaining to service optimisation of the FBR data center. FBR has clarified that all applications having public interface have been operationalised and running smoothly, said a press release issued by FBR on Monday. These operationalised projects include FBR Website, Paysys website, eFBR website, IRIS website, AJK IRIS website; IMS web service, PRA web service and Tax Asaan Mobile application.