Having defined a NTBPI macro with: GBP, SEQ=0 and LBP, SEQ=1, if GBP is closed while the Natural sesión is active, Natural attemps to connect the LBP. But for a Natural RPC it doesn't work in the same way. In our installation we have configured ALLOWUSERKEYCSA=NO, then, for working with a GBP it's necessary that ASM remains active. If for any reason, ASM goes down, the Natural RPC server can't access the GBP but doesn't try to connect the LBP, then, the Natural RPC goes down too. It would be good if a Natural RPC could switch to a LBP when the GBP is no longer accessible.