Post amount greater than 9,999,999,999 in a single line item of document

Hello Experts,

Currently in SAP system we can post a maximum amount of 9,999,999,999 per line item.

But user wants to post amount more than 9,999,999,999.

For E.g.: 16,999,999,999.

Is this possible in SAP. If yes, How & where do we have to make the necessary changes.

Please reply.

Thanks in Advance,

Pratham