Controlling SM30

Hi Experts,

Can you guide me on how to have control over a table.

For example i have a table ZPP_PLANNING which contains my planning data and i am having 2 users ( USER1 and USER2 )

Now both the user have SM30 authorization and can maintain tables.

As per may requirement, the SM30 authorization should not be removed from both the user but only USER1 should be able to change and modify ZPP_PLANNING table. In case USER2 tries to modify the table he should not be allow to do so.

Is there any way out to get the above given scenario.

Warm Regards,

Mehul.