Lock entry deleted manually: ENQ_TEST S - In SM21 Log

Hi experts,

We are running ECC 6.0 on AIX with Oracle 10.2.

I happen to check SM21 Syslog which is frequented with the following error "Lock entry deleted manually: ENQ_TEST" or similar errors.

I have checked SAP Notes 310895, 309826, 331701 but i could not find anything for ECC 6.0.

The SM21 error log is as follows;

Details Page 2 Line 16 System Log: Local Analysis of PRD                  1
--------------------------------------------------------------------------------------
|Time    |Type|Nr |Clt|User      |TCode|Grp|N|Text                                   |
--------------------------------------------------------------------------------------
|09:42:55|DIA |000|300|BASISADMIN|SM12 |GE |O|Lock entry deleted manually: ENQ_TEST S|
--------------------------------------------------------------------------------------

Lock entry deleted manually: ENQ_TEST S

Details
Recording at local and central time........................ 08.06.2009 09:42:55
--------------------------------------------------------------------------------------------------------------
|Task......|Process                    |User......|Terminal|Session|TCode|Program |Cl|Problem cl     |Package|
--------------------------------------------------------------------------------------------------------------
|13230     |Dialog work process No. 000|BASISADMIN|sys-7   |      2|SM12 |RSENQRR2|S |Operation Trace|SENQ   |
--------------------------------------------------------------------------------------------------------------

As of now we are not experiencing any implications due to the errors but fear that something could happen in the future, so could anyone suggest what can be done to solve this problem?

Regards

Karthik D