How I can make the contents of a table transportable

You need to create a Transport Request.

Do the following :-

You need to create a View for the Table thru SE11.

After that go to the view thru SE11 ---> utilities ---> Table Maintenance Generator.

In this screen for the section "Dialog data transport Details" the
"Standard Recording Routine" option should be selected.

Then only will the system ask for Transport requsest when entering data thru view in SM30.
 

Beam Back -> SAP Cafe for Data Transfer Workbench