Error at the time of create accounting

Hello All,

We are encountering the following error:
"The account on the gain or loss line is invalid. If you have a gain/loss journal line type defined, please verify the account derivation rule attached to it on the journal line definition. If not, verify the value of the source mapped to the accounting attributes 'Exchange Gain Account' and 'Exchange Loss Account.'"

We have already checked that the accounts are properly mapped in the financial options, and there are no custom SLA configurations.