What is SAP Table Maintenance Generator?

SAP Table Maintenance Generator (TMG) is a tool to generate a table maintenance program i.e. it will generate a program to maintain (Create, Edit & Delete) entries in a table.
To generate a table maintenance generator (TMG)  for a table, display the table in ABAP Dictionary (SE11).

Select “Display/Maintenance Allowed” for Data Browser/Table View maintenance under Delivery Maintenance tab.

Go to Menu Utilities –> Table Maintenance Generator.

Enter the proper authorization group (&NC& is without any authorization) and function group. If the entered function group does not exist, it will create a new function group to store the dialog modules of TMG. Select “one step” for Maintenance type and click on “Find Screen Numbers” on application toolbar.

Select Propose screen numbers and click on continue.

The screen number for overview screen will be automatically populated. Now click on CREATE icon on application toolbar.

Assign TMG and function group to proper package and save.

Table maintenance program is created with the above message in the status bar. Now to maintain entries in the table, go to Maintain Table Views (SM30).

In SM30 enter table name and click on maintain.

Click on New Entries button on application toolbar to maintain new entries in the table.