Only display functions are available

What causes this issue?

You are logged on to the system as user SAP* or in a client that is not
000.

System Response

You can use only display functions in the Support Package Manager
(Transaction SPAM), for example, <LS>Status</> or <LS>Log</>.

How to fix this error?

Log on as a user that is not SAP* and in client 000 to use all
functions of the Support Package Manager.

Error message extract from SAP system. Copyright SAP SE.