Offline Map Area Package Failure

[EL11]

I have a map that spans the entire state and am creating offline map areas via a desktop web browser to use on our mobile device. All layers have sync enabled but are not editable. It is a read only map.

I have a few issues which may or may not be related.

1) A package for an area is taking well over an hour, sometimes the whole day. These packages are 10 - 20 MB in size so I don't know why it takes so long. The layers are all hosted on the same AGOL site as the map, and all are correct in the areas that successfully are turned into offline maps.

2) One area for an offline map fails repeatedly. It appears there is some sort of smaller problem area within the area I'm choosing as I can make an offline area in one place and then try and make an identical size one adjacent to it and it fails. Since this area is using the same base map as every other successful offline area, I do not know why the failure is happening.

3) On my mobile device, I tried to create an offline area through the Field Maps App while connected to the internet. It fails with no error log or message. One moment its creating it, the next that area disappears from the list.

4) On the mobile device, it will not update any layers without completely logging out and logging back in and sometimes even that isn't enough and I have to delete the offline area from the device and grab it again. The device is an iPad with OS 14.4.1. 

Is there a way to see why a particular area is failing to package?   

[MariahMack]

Still struggling with this March 2025. Packaging failed messages with no content (On AGO). I've had no issues making offline areas of 4000+ acre areas in the past, with high detail and hybrid world imagery basemap. Now I'm getting messages that the area is too large. But when I try to package a very reasonable smaller area, packaging goes on all day and eventually fails. In Field Maps the offline area just says "packaging"....

[TanithLives]

G'day @MariahMack. That's annoying news. I had hoped the system had become more stable. Two days ago I dared to package a large area and pretty high detail (buildings level)...and it worked! I must have made the right offerings to the ESRI deities. 

I do wonder if this is linked to another issue I have just had an answer to. I was having all sorts of problems with templates and their transfer to Field Maps. It worked fine one day, then was broken the next. I have just learnt that ESRI have rolled back this functionality - so maybe this has bled through to other aspects of Field Maps? Thread about it is here. 

Edit 31/03. Just tried to package a very small, but detailed, area (1.2 mb). Failed to package first few attempts, but then mysteriously worked.