Ex.rate diff.accts are incomplete

Hi Gurus,

I am facing this problem when I am trying to resolve the problem using T-Code F-28.

Ex.rate diff.accts are incomplete for account xxxxxx currency USD

Message no. F5063

Diagnosis

The accounts for posting exchange rate differences could not be determined. For the specified G/L account and the specified currency key, the accounts are only specified incompletely. Either the accounts for the implemented exchange rate difference, the accounts for the valuation differences or the balance sheet adjustment account are missing.

Lets say if I create a New GL Account for this particular company code what do I do next then?

I am looking forward for your reply. Than you very much in advance.