SAP Message RY434 - Exchange rates &/& are missing; see long text

Diagnosis
Exchange rates &/& of exchange rate type & are missing. This exceeds themaximum number of rates that can be missing.

Procedure
To import the data, in Customizing choose Financial Supply ChainManagement -> Treasury and Risk Management -> Basic Functions -> MarketData Management -> Manual Market Data Entry..
You can also use transaction TBEX to import the market data requiredfrom an Excel file.
You can also increase the maximum number of errors permitted in thehistory. The system then increases the size of the sample if market datais missing.