Error While Posting MIRO of Imports PO

Dear Sir

When we are trying to post MIRO for Imports PO with Local currency we get following Error

Enter rate INR/CHF rate type M for 16.05.2011 in the system settings

For IV (Invoice Verification) we use currency CHF as our Vendor currency is CHF.

But During MIRO for Customs clearing Charges and Freight Forwarder charges we need to use INR at that time we get this Error.

Enter rate INR/CHF rate type M for 16.05.2011 in the system settings

If we maintain currency rate in OB08 of INR & CHF will solve this problem?