XCF signals from each transport class are sent out on the PATHOUT path and received into the system on the PATHIN paths. Tuning is achieved by altering the number or type of paths, or both. To review the XCF path configuration use the RMF™ XCF Path Statistics report. Two different issues commonly reported to IBM® regarding signaling paths are reviewed in this flash: no paths defined, and an insufficient number of paths defined.