Internode Session do not work if user do not have same author code on both nodes

Issue/Introduction:

Error Message :
In the log of the remote Dollar Universe Node we can find the following error messages:

======================================================================================
| 2016-07-08 16:11:13 |ERROR|X|IO |pid=1512.5828| owls_user_read | cannot read USER [][ ], err=3
| 2016-07-08 16:11:13 |ERROR|X|IO |pid=1512.5828| o_io_cache_data_provider_ | Error getting User <>: 600
| 2016-07-08 16:11:14 |ERROR|X|IO |pid=1512.5828| owls_user_read | cannot read USER [][ ], err=3
| 2016-07-08 16:11:14 |ERROR|X|IO |pid=1512.5828| o_io_cache_data_provider_ | Error getting User <>: 600
| 2016-07-08 16:19:42 |ERROR|X|IO |pid=1512.5320| owls_job_event_select | Error 5 init
======================================================================================

Patch level detected:Dollar Universe 6.0.00
Product Version: Dollar.Universe 6.0.0

Description :Inter-node sessions between two 6.6 nodes do not work properly if user does not have the same author code on both instances

Cause:

Cause type:
Defect
Root Cause: N/A

Environment:

OS: All

Resolution:

=========================== Workaround ==============================

Delete the existing user on one of the both nodes, and recreate it manually with CLI instruction.
Take care to assign exactly the same author code to this user as on the other node.

Example if the author code on the other is "abc" run
./uxadd user user= prof= both code=abc sysuser= .......

=========================== Definite Solution ==============================

Upgrade to Dollar Universe 6.7.21.

Fix Status: Released

Fix Version(s):
Component: Application.Server
Version: Dollar.Universe 6.7.21

Additional Information:

Workaround :
N/A