1. Solution by manually deleting two SECSTORE entries (as of Release 7.00):
Call transaction SECSTORE.
Choose "Execute" (F8).
In the entries that are displayed, delete the entry /HMAC_INDEP/RFC_INTERNAL_TICKET_4_TRUSTED_SYSTEM if it is marked with a red traffic light.
In the entries that are displayed, delete the entry /HMAC_INDEP/RFC_EXTERNAL_TICKET_4_TRUSTED_SYSTEM if it is marked with a red traffic light.
In transaction SE37, execute the function module RFC_PING with the destination NONE. If the system displays an error message, execute the function module RFC_PING again; the error message cannot appear a second time in this case.