How To Fix M8640 - No se han def. campos-clasif. para esta estructura de líneas

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 640

• Message text: No se han def. campos-clasif. para esta estructura de líneas

¿Qué causa este problema?

For the selected line layout, the system configuration settings do
not contain any specifications concerning the fields by which sorting
is to be carried out.

¿Cómo arreglar este error?

You may want to choose a line layout that permits sorting (if so,
choose <LS>Settings</> --> <LS>Line layout</>).
If you want to perform a sort for the set line layout, you must ask
your system administrator to change the display variant in the
Customizing system of Invoice Verification. For the line layout, you
can enter the fields that are to be offered as sort criteria (via
<LS>Environment</> --> <LS>Field selection</> --> <LS>Sort</>).

Extracto de mensaje de error del sistema SAP. Copyright SAP SE.