Number & outside range of validity

What causes this issue?

You did not enter a valid goods receipt/issue slip number.

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?

INCLUDE NA_EINGABE_PRUEFEN
If you do not enter a valid number, the system will automatically assign
a number.
IF &[SWITCH]S4H_DOCU_ON_PREMISE& = 'X'.
If you have the appropriate authorization, check in the Customizing
system of Inventory Management which number intervals have been defined.
<DS:TRAN.OMC1>Proceed</>
ENDIF.

Error message extract from SAP system. Copyright SAP SE.