Hi Vishal,
Did you use FAGL_FCV - Foreign Currency Valuation ?
If it is so, if you did or didn't run FAGL_FCV in Period 10 doesn't affect payment in Period 11.
Foreign Currency Valuation is to calculate the value of open items or balances in foreign currency to local currency, this doesn't block payments in the next period.
FAGL_FCV is part of Closing Period process.
Check your exchange rates between the payment date and the document.
Kind Regards