Join definition has errors; check the definition (InfoSet &)

What causes this issue?

An unauthorized ON condition was defined when defining the join in the
InfoSet. This was caused by an error in the graphical join control. You
must remove this ON condition.
An unauthorized ON condition occurs when the field of one table is
linked to another table with two different fields.

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?

Change the InfoSet (transaction SQ02) before it is used again to define
queries.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.