&1&2&3&4

What causes this issue?

You attempted to export a transport request. However, the system
administrator is not currently allowing any exports to be made from
this system.
The reason is:
&V1&&V2&&V3&&V4&

System Response

The transport request was not exported.

How to fix this error?

Repeat the export later. The message might contain information about
when you can repeat it, or you can contact your system administrator
for information.

Error message extract from SAP system. Copyright SAP SE.