These edits have now been reverted

Hi, these appear to be fictitious.
Can a person familiar with the area confirm this mapping.

I have reverted this suspected vandalism.

I think TheSwavu might have fixed it
relation/2916624#map=13/-33.90825/151.19187

I suggest a polygon drawn around perimeter for the mall.
Multipolygons are not the same as multiple polygons joined together and have to be formed in a valid way as in the documentation.
You could also map it all using the building:part method which would be a polygon around the perimeter and a polygon for each part but the standard layer only renders the outside polygon.

Hi, this relation appears broken https://tools.geofabrik.de/osmi/?view=areas&lon=151.20379&lat=-33.90528&zoom=18
relation/5700628#map=16/-33.90764/151.20832

Similar here
https://tools.geofabrik.de/osmi/?view=areas&lon=152.26539&lat=-4.33741&zoom=19

Hi, another similar osmi error here
https://tools.geofabrik.de/osmi/?view=areas&lon=145.81367&lat=-5.21722&zoom=19

Hi, the shops multipolygon is invalid because outers cannot share sides.

https://tools.geofabrik.de/osmi/?view=areas&lon=147.18491&lat=-9.44648&zoom=19&baselayer=Geofabrik%20Standard&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways
relation/19108037#map=19/-9.446389/147.184901

osm.wiki/Relation:multipolygon
Just draw simple polygons instead.

Hi, relation/19069461#map=13/-31.84367/150.34610 appears to have a coup;e of inners that should be part of relation/10116036#map=12/-31.7806/150.1435
Osmi detects a role error https://tools.geofabrik.de/osmi/?view=areas&lon=150.34867&lat=-31.84712&zoom=13
iD is not really suitable for editing such large multipolygons.

Hi, multipolygons cannot share sides. I have fixed by making simple polygons.
osm.wiki/Relation:multipolygon

no response, reverted business not mapped to a specific building location. Appears to be online only contact.

Thanks for letting us know. Josm will reward your efforts many times over.

I decided not to revert these areas because I don't understand the full extent of the changes and why they were made

Hi, do you know the name of the company or is there a business name on the centre?

No, I will recover all the deleted boundaries in the next few days.

Hi, you might like to add tags specifying what is accepted for recycling here
amenity=recycling

Hi, multipolygons like this...
relation/19053061#map=19/-27.483575/153.012282 ...cannot share sides
https://tools.geofabrik.de/osmi/?view=areas&lon=153.01239&lat=-27.48351&zoom=19
You can either draw
3 simple polygons
or one simple polygon around the perimeter
or combine these using building:part method
or create 3 multipolygons(one for each section) and share the common ways in each.

Hi, you have listed your business at 10 Wyndham Place and placed the address node away from any particular building.
There are 8 units at number 10. Which unit is your business located at and can you locate the business over the building or where the guttering operations are maintained. Osm expects a business to locate at the physical place of operations instead of plonking a node somewhere nearby.

Hi, if you are adding a business listing to a multistory building you need to add all the details to a new node within the building outline unless you are the sole occupant of the whole building.
I also noticed that this building was tagged as:
addr:housenumber=2
addr:street=Market Street
building=office
building:levels=7
but you have changed these to
171 Clarence Street with the building having 8 levels.
Do you want me to revert your changeset so that you can add the details to the right building?