Name & of client & is not the same as the name & of the Warehouse

What causes this issue?

To ensure trouble-free communication between the source system and the
SAP Business Information Warehouse, the logical system names must be
known to both systems.
The current system&V1& is known to BW as &V3& . This can have the
following cause:
When a system is automatically connected, two logons take place for the
source system in question: First, there is a dialog box logon with the
specified host. A logon screen appeared for this logon. During the call,
the system determined the name &V3& for the system to be connected.
Then, a second logon occurred with the specified destination or with the
destibation entered in BW in the RSLOGSYSDEST table in LOGSYS = &V3& .
During this logon, the system determined the name &V1& .

System Response

Processing terminated and the system reset all changes.

How to fix this error?

In the table named above, check the destination entered to make sure
that it actually references the system to be connected.

Error message extract from SAP system. Copyright SAP SE.