How To Fix V1390 - Billing block & is not defined

SAP Error Message - Details

• Message type: E = Error

• Message class: V1 - Verkaufsbelegbearbeitung

• Message number: 390

• Message text: Billing block & is not defined

What causes this issue?

<GL:billing_block>Billing block</> &V1& is not allowed.
INCLUDE 'NA_NO_PROCESSING_2' OBJECT DOKU ID TX LANGUAGE E
INCLUDE 'NA_CHECK_ENTRY' OBJECT DOKU ID TX LANGUAGE E
DEFINE &FELDNAME& = '<LS>Billing block</>'
INCLUDE 'NA_POSSIBLE_ENTRY' OBJECT DOKU ID TX LANGUAGE E
DEFINE &ANLEGEOBJEKT& = 'billing blocks'
INCLUDE 'NA_CREATE_CHANGE' OBJECT DOKU ID TX LANGUAGE E

Error message extract from SAP system. Copyright SAP SE.