Not possible to create invoicing order for invoicing list

What causes this issue?

For the invoicing document being created, you want the system to create
an invoicing order for <DS:DE.SRCDOCCAT_KK>source document category
SUBIN</> and <DS:DE.SRCDOCTYPE_KK>source document type</> &V1&, so that
this document can be entered in an invoicing list.
However, you are not allowed to use source document type &V1& for the
invoicing document that is being created, because this invoicing
document itself is already processing a source document of this source
document category and this source document type.

System Response

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

How to fix this error?

Check if you really need to use both invoicing functions,
<DS:DE.INVFUNC_SUBINV_LIST_KK>Create Invoicing List</> and
<DS:DE.INVFUNC_SUBINV_TRIG_KK>Preselect Invoicing Document for Invoicing
List</>, at the same time in invoicing process &V2&. If it is necessary,
then make sure that you use different source document types for the
invoicing orders to be processed and invoicing orders to be created (in
this process).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.