Message SAP /IBS/RB107 - Conversion to RBD display currency not successful: &1

Diagnosis
The function module responsible for the conversion ended with an errormessage. This could be caused by any of the following:
1 (DATA_ERROR) At least one parameter was transferred with an invalidvalue.
2 (BAD_CURRENCY) At least one invalid currency was transferred.
3 (CONVERTATION_FAILED) The conversion in the RBD display currency wasnot possible.

System Response
The RBD display currency cannot be calculated.

Procedure
Depending on the error number you have the following options:
1 One or more of the parameters transferred were initial or empty whenthe function module was called.
2 One or more currencies were not valid currencies. Compare thecurrencies with the table TCURC. Only currencies that are in this tablecan be processed.
3 Check whether the table TCURR contains the exchange rate of yourcurrencies. The rates entered here are always valid from a certain dateonwards. The system cannot convert the currency if the key date on whichthe exchange is to be made is too far in the past.

Procedure for System Administration
Information: The function calls the SAP function moduleCONVERT_TO_LOCAL_CURRENCY with the parameters RBD display currency,original currency, currency amounts and key date.
Function module: ,,,,/ibs/rb_kto_convert_currency