No serial numbers created for material &

What causes this issue?

For this material, no serial numbers have been maintained at the time of
the goods movement, although serial number management is active.
Therefore, serial numbers may exist that do not correspond to any stock
or stock quantities may exist that are not assigned to any serial
number.

System Response

IF &[SWITCH]S4H_DOCU_ON_PREMISE& = 'X'.

How to fix this error?

Check the serial number profile in the material master record and the
definition of the profile in the Customizing system of Plant
Maintenance.
If serial numbers are to be maintained for every goods movement, the
profile should be defined so that specification of serial numbers is
mandatory.
ENDIF.

Error message extract from SAP system. Copyright SAP SE.