For some reason all our ABAP systems are not able to send to the SLD anymore. The RFC error's saying SLD_UC or SLD_NUC not registered. If I logon to the XI system and look in SMGW- active connections the SLD_NUC and SLD_UC program's are not registered. Other T type RFC's work and I can see the program registered under TP name.
We have tried a restart and a kernel upgrade but it still doesn't work.
Any idea's