SAP Message /IBS/RB322 - Enter either an exchange rate or a local currency amount - data not chngd

Diagnosis
There are two likely causes:
1. Neither an exchange rate nor an amount to be translated has beenentered.
2.Both an exchange rate and an amount to be translated have beenentered.
You may only make an entry in one of these fields.

System Response
Processing was terminated.
In the first case the local currency, exchange rate and translationamount have been set to Empty or '0'.
In the second case the data has not been changed.

Procedure
Enter either an exchange rate or a translation amount for this posting.