how to change the decimal part on the sales order and receivables for one customer

Dear Customer Connect,

I would like to ask about can we change the decimal part of the list price, total amount from 5 to 6 decimal on the sales order and receivables. But we want to change decimal part from 5 to 6 from only one customer. Is there any set up and development to apply? Also, Is there any risks if we do this set up or development?

Why we want to do this development;

Because one of the customers accept the receipts with the 6 decimal digits and they reject the receipts if it created with 5 decimal digits.

Regards,