Form16a shown pannotvabl

Hello Sir,

Minor Grand Son had an FD with Bank with Nominee is Grand Mother, in which PAN was not updated. Bank had deducted TDS @ 20% for FY 2017-18. They might be forgot to update  PAN of Guardian. Hence the TDS deducted on the name of Minor , He is 3 Yrs Old, Does not have PAN.

In TDS Certificate they showed in bank that does not have PAN, ( PANNOTVABL), Now bank has provided me Saral TDS form and signed by Manager. in that 16A form , PANNOTVABL

Nominee is Gaudian and having PAN, (mean Grand Mother) because she is guardian of that grandson.

Now my query is-

1. How can I may take credit of the above TDS for this year? Which 16A form does not have PAN details.

Thanks