Failed to save map Missing value for required property: numThumbs.

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02-14-2022 04:34 PM
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CoryBlackEagle1
New Contributor II

I just recently starting getting an error when I try to save the map in ArcGIS Online new map viewer:  

Failed to save map
Missing value for required property: numThumbs.
 
At first, by rearranging layers and moving any time-enabled layers to the bottom of the list, I could get past it.  However, that is not working.
 
I recreate the same map in classic map viewer and it saves with no problem.
 
Anybody run into this and have a solution?  If not, I am going back to the classic map viewer, especially for my students doing their labs.
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RussRoberts
Esri Notable Contributor

What type of layers are you using in the map? Is it a new map you are creating in the Map Viewer or updating an existing on? If you can, can you share the layers you are using to create the map? 

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AlainaRussky
New Contributor

I was having the same "numThumbs" problem.

Triple check that all your map layers are not time-enabled. I just checked all (20) layers in my map and found one that was time-enabled. I turned that one off and everything saves perfectly.

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