Foreign Exchange Rate

The document type AF shows currency translation for depreciation entries using different exchange rates (not daily rates) compared to document type SA (the currency translation is correct as it is using daily rates). The exchange rate type M is assigned correctly to document type AF, similar to document type SA. The rates in exchange rate table for that particular date are correctly reflected in SAP document type SA but not in document type AF. Is there some other place where exchange rates are configured for depreciation postings, from where the system is pulling them?