Check maturity

Dear, I got a check from a customer and it is due after a month. I want to enter the due date of the check.

I would have thought your post dated check would be invalid until the date written on the check. If that is the case you should date the receipt the same as the date shown on the check. Entering a future due date for a check is not a common administrative process.

and in a lot of countries has no legal standing

In Italy it’s illegal