problem with listing, features is not allowed as an item specific

[vinyl_records_albums]

problem with listing, features is not allowed as an item specific, cannot make alteration to 'item speciific', cannot save or publish, am stuck.

Any advice

[twyngwyn]

have a read here:

https://www.ecommercebytes.com/C/blog/blog.pl?/pl/2019/10/1572221867.html