WARNING: Table entries exceed &2 bytes: &1

What causes this issue?

The table is wider than &V2& bytes.

System Response

Tables that are wider than &V2& bytes cannot be processed by the client
copy program.

How to fix this error?

If it is a customer-specific table, check whether the contents of this
table are required to run a client. If this is the case, try to make
the table narrower than 64000 bytes. If it is an SAP table, SAP has
already ensured that the data is not required to set up the client
consistently. No action needs to be taken in this case.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.