Query contains output fields that are ignored

What causes this issue?

You attempted to open a query that contains several lines. This query
was persumably created with the SAP query (transaction SQ01). You can
only display one line lists here, however.

System Response

It should be pointed out that a loss of information results from this.
Not all output fields of the query are made available for use. Only
those fields are considered that are outputted in line 1, and that are
not assigned to any list group or list group 1.

How to fix this error?

You can continue to work with the incomplete query if this loss of
information is acceptable to you. Otherwise you should open the query
with the SAP Query.

Procedure for System Administrators

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.