& & and & & are not maintained

What causes this issue?

The current &V3& &V4& is not permitted in combination with the &V1&
&V2&.
INCLUDE 'NA_NO_PROCESSING_1' OBJECT DOKU ID TX LANGUAGE EN
INCLUDE 'NA_CHECK_ENTRY' OBJECT DOKU ID TX LANGUAGE EN
DEFINE &FELDNAME& = '<LS>region of origin</>'
INCLUDE 'NA_POSSIBLE_ENTRY' OBJECT DOKU ID TX LANGUAGE EN
DEFINE &ANLEGEOBJEKT& = 'regions of origin'
INCLUDE 'NA_CREATE_CHANGE' OBJECT DOKU ID TX LANGUAGE EN
IF &DEVICE&='SCREEN'
<ds:TRAN.OVK2>Proceed</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.