[basic.indet] seemingly cross-references to [basic.lval] for the meaning of "erroneous value": https://eel.is/c++draft/basic.indet#1.sentence-3

However, [conv.lval] doesn't defined what an "erroneous value" is, it merely says that use of erroneous values in some contexts is undefined behavior (https://eel.is/c++draft/conv.lval#3.4) and cross-references back to [basic.indet].

I fail to see the point of this; it just seems like circular referencing. [basic.indet] definitely seems like the section in charge of "erroneous value", so the reference to [basic.indet] makes sense. The other way around is bizarre.