Hi, multipolygon outers cannot share sides.
https://tools.geofabrik.de/osmi/?view=areas&lon=153.04342&lat=-27.49772&zoom=19
Simple polygons or just one polygon for whole area is ok.

Another view... the red dots appear to be the nodes likely accidentally moved.
https://overpass-api.de/achavi/?changeset=181078914

Hi, multipolygons are not valid for the pedestrian area
https://tools.geofabrik.de/osmi/?view=areas&lon=145.08010&lat=-37.70468&zoom=19
You probably need to use simple polygons in this case.
Multipolygons outers cannot share sides. You might need to read the wiki on multipolygon relations if you want to use them.

Hi, osmi shows this needs fixing.
https://tools.geofabrik.de/osmi/?view=areas&lon=148.66217&lat=-35.60234&zoom=14
You need to make a multipolygon with an outer ring and an inner ring where the trees are.

Hi, can you drag this accidentally dragged node back to where it belongs. node/8913570657#map=16/-33.77444/150.64323

Hi, osmi reports this multipolygon that needs repair
relation/10089358#map=15/-35.32051/149.15476

https://tools.geofabrik.de/osmi/?view=areas&lon=149.15474&lat=-35.31991&zoom=15

I have now deleted or redraw out of date building imagery from old Bing. Please check Esri and Mapbox imagery too.

Hi, many of you edits are incorrect because you sre using out of date old Bing imagery. Please check the edit by also referring to later Esri or Mapbox imagery. Some of the building you have added have been demolished or replaced by a newer building.

Hi, can you check later imagery like Esri and Mapbox as some of the buildings appear to have been demolished. e.g. 10 Snedden Drive

This is the relevant changeset
changeset/180610361#map=14/-27.86021/153.32618
I am unfamiliar with the area.

Hi Dantine, I notice that the roundabout that you removed at Foxwell Rd and Shipper Drive appears to be changed back to a roundabout using Bing imagery. Later? Esri and Mapbox imagery would suggest to me that the new mapper has mistakenly used old imagery to regress to a roundabout

Hi, I am wondering why 11 Megan Crescent house is a multipolygon and 5 Megan Crescent is not. They appear similar to me.
Also curious about Megan Crescent Sports Ground and the adjacent wetland are both single member MPs but they share a way. I would split the shared way section and only include this bit once in each mp and not have a duplicate way.
Just curiosity, no judgement on the mapping methods chosen.

I updated this area. Can you check thanks. I deleted addr: state,postcode,suburb from the business tags as these are optional and already mapped by area in Aust. You can re-add if preferred.

Hi, if your business does not occupy all the floors of the building you should add a new node inside the building shape and add your business tags to that instead of adding them to the building.

Hi, osmi detects a problem with overly complex mapping.
https://tools.geofabrik.de/osmi/?view=areas&lon=153.59007&lat=-28.79170&zoom=19

Hi, you need to zoom in much closer and draw the outline of the house instead of the land plot

Hi, this node was a duplicate of the hotel and I have deleted it. Also the menu tag url did not go to the menu.

Hi, this node was a duplicate of the hotel and I have deleted it. Also the menu tag url did not go to the menu.

Hi, I used Esri World Imagery; Mapbox Satellite which are available to you too in the iD editor to add the new buildings plus others in the block. I decided to map the roof lines using mainly Mapbox Satellite imagery and did not adjust to ground level as there are no gps traces to help align the imagery anyway.
I also abbreviated your description.
Can you check if the business location is correct.

Hi, I fixed an osmi invalid multipolygon here and have also combined all the Blue Ridge Business Park into the mp.