What causes this issue?

INCLUDE FTI_DTEL_FTI_NUMBR_LC OBJECT DOKU ID TX

System Response

Since <ZH>one</> currency translation type was entered for translation
from valuation currency into local currency, the currency is translated
by the reporting function.
<ZU>As a result, if a key figure has a value other than zero in
valuation currency, it will also have a value other than zero in local
currency, even though some key figures are not actually posted in the
local currency.</>

Error message extract from SAP system. Copyright SAP SE.