Report & does not exist (refer to long text)

What causes this issue?

The system could not find the report that you wanted to execute.
Reports are are stored by client. If you are certain that the report
exists, it may be the case that the report is in a different client
than the one you used to logon to the system. If so, you can import the
report from the original client into your client.

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?

Import the desired report from the source client and into the client
with which you logged on to the system. Depending on the application
component, the import function in Customizing can be accessed under the
following paths:
CO-PA: Controlling -> Profitability Analysis -> Tools -> Production
Startup -> Import
EC-EIS: Enterprise Controlling -> Executive Information System -> Tools
-> Import of Delivered Settings
EC-PCA: Profit Center Accounting -> Infomation System -> Drilldown
Reporting -> Import from Client -> Import Reports

Procedure for System Administrators

For reports that are in the delivery client 000, you need to copy the
the reports to each of the new clients that you have created where
these reports are supposed to be available.

Error message extract from SAP system. Copyright SAP SE.