Ex.rate diff.accts are incomplete for acct & currency & (translation)

What causes this issue?

The accounts for posting exchange rate differences could not be
determined. The accounts which are needed for the posting translation
are missing. It was determined for the company code that translations
are to be posted.

System Response

The system cannot generate the exchange rate difference posting.

How to fix this error?

By pressing ENTER, you achieve that the document is reset to a status
without automatic posting. In another window, you can complete default
settings for exchange rate differences and post the document afterwards.
IF &DEVICE& = 'SCREEN'
<DS:TRAN.OBXZ>Proceed</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.