RFC error when sending logon data in SM59

After system copy or sometimes due to some error RFC didn’t work.  when doing connection test in SM59.  it shows an message:-

RFC ERROR WHEN SENDING LOGON DATA

Solution:-

Check this SAP note  – 1532825

ST22 shows entries like CALL_FUNCTION_CONNECT_ERROR or CALL_FUNCTION_SIGNON_INCOMPL

Solution is to manually delete 2 entries from SECSTORE.

Go to TX secstore

Execute –

You find 2 entries with red traffic light, delete this entries.

/HMAC_INDEP/RFC_INTERNAL_TICKET_4_TRUSTED_SYSTEM

/HMAC_INDEP/RFC_EXTERNAL_TICKET_4_TRUSTED_SYSTEM

Then go to TX se37

Execute the function module RFC_PING

if the system displays an error, execute the function module again, the error message cannot appear a second time.

Now issue is resolved.

Check entries in SM59. it will work now.