CALL_FUNCTION_SINGLE_LOGIN_REJ- No authorization to log on as a Trusted System (L- RC=1 T-RC=1).

Question

Hi All,
i have created a trusted connection(say system A_100 and B_100,---100 is a client) as per SAP note 128447 - Trusted/trusting systems
I have all required authorisation i.e s_rfcacl,S_rfc ,s_rfc_tt.
i am able to remote logon from system B_100 to system A_100 ,but issue in when i try to logon from system A_100 to system B_100.
error is -
No authorization to log on as a Trusted System (L- RC=1 T-RC=1).
i can see run time error in system B_100 as with user SAPSYS and client 000(why it is showing this user and client )
CALL_FUNCTION_SINGLE_LOGIN_REJ
Details-
Category               Installation Errors
Runtime Errors         CALL_FUNCTION_SINGLE_LOGIN_REJ
Date and Time          08.08.2014 09:07:04
Short text
     No authorization to log on as a Trusted System (L-RC=1 T-RC=1).
What happened?
     The current program had to be terminated because of an
     error when installing the R/3 System.
What can you do?
     Note which actions and input led to the error.
     For further help in handling the problem, contact your SAP administrator
     You can use the ABAP dump analysis transaction ST22 to view and manage
     termination messages, in particular for long term reference.
Error analysis
     An RFC call (Remote Function Call) was send with an invalid user ID
     "XXXX " or the caller system is not registered as a Trusted System in the
     target system.
Information on where terminated
    Termination occurred in the ABAP program "SAPMSSY1" - in
     "REMOTE_FUNCTION_CALL".
    The main program was "SAPMSSY1 ".
    In the source code you have the termination point in line 113
    of the (Include) program "SAPMSSY1".
Source Code Extract
Line  SourceCde
   83   COMMUNICATION SEND ID convid BUFFER header.
   84   IF sy-subrc EQ 0.
   85     PERFORM (sy-xform) IN PROGRAM (sy-xprog).
   86   ELSE.
   87     MESSAGE a800.
   88   ENDIF.
   89 ENDFORM.                    "cpic_call
   90
   91 *&---------------------------------------------------------------------*
   92 *&      Form  remote_function_call
   93 *&---------------------------------------------------------------------*
   94 *       text
   95 *----------------------------------------------------------------------*
   96 *      -->VALUE      text
   97 *      -->(TYPE)     text
   98 *----------------------------------------------------------------------*
   99 FORM remote_function_call USING value(type).
  100   DATA rc             TYPE i VALUE 0.
  101   DATA: l_syxform     TYPE syxform,
  102         l_syxprog     TYPE syxprog,
  103         l_cbe         TYPE i.
  104
  105 * necessary variables for class based exceptions
  106   DATA: l_root        TYPE REF TO cx_root.
  107
  108   DO.
109 *
110 * with ID 'CLException' we determine, whether the caller is
111 * class based excptions or not
112 *
>>>>     CALL 'RfcImport' ID 'Type'        FIELD type
114                      ID 'SYXForm'     FIELD l_syxform
115                      ID 'SYXProg'     FIELD l_syxprog
116                      ID 'CLException' FIELD l_cbe.
117
118     IF l_syxprog = 'JAVA'.
119       SYSTEM-CALL plugin
120                   ID 'JAVA' VALUE 'FORW_JAVA'
121                   ID 'RC'   VALUE RC.
122 *   if there is no rollout on the JAVA side which
123 *   rolls both, JAVA and ABAP, we return to the
124 *   C-Stack and reach this point
125
126 *   in case there was an rollout, the ABAP-C stack is lost
127 *   and we jump direkt to this point
128
129 *   here we trigger the rollout on this Abap side with
130 *   the following statement
131       SYSTEM-CALL plugin
132                   ID 'JAVA' VALUE 'ROLL_OUT'
I have also referred sap note-1627901 - Trusted RFC troubleshooting
No luck.
Do let me know if additional information is needed .
Kind Regards,
Sumit

Answer 1

Hi Sumit
1.  Is this both system Support pack level are same?
2. As you said that you SAP_Basis 7.31 - support package level?
3. Have you check the SAP note 128447 - Trusted/trusting systems they are given ABAP runtime correction  2021691 - CALL_FUNCTION_SINGLE_LOGIN_REJ and trusted RC=1
4.
one question -  why it is working in system B and not in system A.
Its may be software bug for that they give ABAP runtime correction
Regards
Sriram