Hi,
Please note that translation ratio is just for defining ratio between two currencies. For e.g. 1 INR = 100 JPY and vice versa. It no where related with defining exchange rate.
Generally, you should copy the translation date from SAP standard.
In your case you have given date as 01.01.8000 which is after 01.01.2014, hence you will be facing issues.
Hence you are requested to copy standard SAP translation ratio date and define the relationship between the currencies accordingly.
Regards,
Tejas