When you receive camt.054 file from bank, you will receive a bank exchange rate in case transaction currency is different from the bank account currency. You need to import this rate in the system.
To apply the fix, you need to upload following GER configurations from the LCS:
Payment model mapping to destination ISO20022
Article ID: 4025830 - Last Review: 2017, ജൂൺ 9 - Revision: 1