Settlement document & not released to Financial Accounting

What causes this issue?

Settlement document &V1& (billing document) has been created but not
released to Financial Accounting.
The document belongs to billing document type &V2&. The "Posting block"
indicator has been set for this billing document type (i.e. the
document is not automatically released to Financial Accounting at the
time of document creation.

System Response

The settlement document has been created but not yet forwarded to
Financial Accounting.

How to fix this error?

You must forward the settlement document (billing document) to
Financial Accounting manually.
If you have the appropriate authorization, you can release the document
directly.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

<DS:TRAN.VF02>Change billing document</>
You can specify that release to Financial Accounting is to take place
automatically at the time of document creation.
INCLUDE 'NA_CUST_MAINTAIN' OBJECT DOKU ID TX LANGUAGE E
IF &DEVICE&='SCREEN'
<DS:SIMG.SIMG_CFMENUOLSDVOFA>Define billing document types</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.