BAPI_OBJCL_CHANGE and BAPI_TRANSACTION_COMMIT

Hi,

I have written a program that updates material characterics using the BAPI's in the title.

I may be having a bit of a slow moment but I don't understand something, if someone could clarify that will be excellent.

1. If a change a material characteristic using BAPI_OBJCL_CHANGE and BAPI_TRANSACTION_COMMIT, the locked entries get deleted from SM12 for every materials that is updated.

2. If I add a radio button to the selection screen and then perform the actions in step 1, the material lock entries remain in SM12 until I exit the program. This of course is not desirable.

The program has a start-of-selection and an end-of-selection.

Any ideas will be appreciated

Regards

J-J