In some cases all RFC destinations may fail with the error "Incomplete Logon data", this wiki provides tips on what to do in this situation.
This issue may occur after system exports, system copies, or system upgrades during which the system ID (SID) changes, certain SECSTORE entries are invalid
Identifying the issue
The transport Management system may also report the error
XT101 "RFC error when sending logon data".
Reproducing the issue may result in the following being written to the corresponding work process trace file:
N RSEC: The entry with
N was encrypted by a system
N with different SID and cannot be decrypted here.
M *** ERROR => LocFunc_ReadKeyFromDB(): Error in function:
The solution is contained in * Note: 1532825 Deleting SECSTORE entries during system export/system copy.
Related SAP Notes/KBAs