Assignment for warehouse number &1 not maintained

What causes this issue?

IF &[SWITCH]S4H_DOCU_CLOUD& = 'X'.
You have not assigned an address to the warehouse number.
ELSE.
You have not assigned a supply chain unit, default party entitled to
dispose, or owner to the warehouse number.
ENDIF.

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?

IF &[SWITCH]S4H_DOCU_CLOUD& = 'X'.
Set the address of the warehouse.
Find this configuration step under <LS>Manage Your Solution </>>
<LS>Configure Your Solution </>> <LS>Supply Chain </>> <LS>Warehouse
Management </>> <LS>General Settings </>> <LS>Set Warehouse Address</>.
ELSE.
Assign to each warehouse number a supply chain unit, a default party
entitled to dispose, and owner. Note that you must make this assignment
in the production system.
To make the assignments, in the SAP Easy Access Menu select <LS>Extended
Warehouse Management </>-> <LS>Settings</> -> <LS>Assignments: Warehouse
Number/Business Partner</>.
ENDIF.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.