field is not displaying in table maintenance

Dear Experts,

I have created a table with 5 fields MANDT, WERKS, MATNR, MIN_QTY, MEINS. I used all the stadard dataelements.

I have created the table maintenance generator with 2 step. in the first step I am not able to see the field MIN_QTY.

Please advice how to display the field in table maintenance generator.

thanks in advance

Regards

Jagadish