updating multiple StockItem in a single REST call

I don’t understand.  All the values that I want to change for one set are at the same level.  Are you saying InventoryID, Attributes, Content, and custom are “header level objects”?  I’m just trying to find a way to update multiple Stock Items.  If I use a POST request instead of a PUT request, will that replace the entire Stock Item?  I don’t want to do that.

Okay, when I used SOAP requests last week, I was looping through all the Stock Items that I wanted to modify and calling a single Submit SOAP call for each item.  When I switched to using REST, it worked fine but it’s taking A LOT longer to update 9 thousand Stock Items.  It used to take no more than 2 hours when I used SOAP but now it’s taking twice as long just to update 4 thousand Stock Items using REST.  I was hoping that sending the items in a batch of 100 or more would speed things up but currently I’m stuck updating one Stock Item at a time.  Is there any way to speed up my REST calls?  I’m currently using C# PutAsync.  If I use PutSync instead, my code will finish right away but I’m not convinced that it will complete updating that many stock items any faster.

Yes, it’s licensed.  It actually ran faster recently.  Maybe it has to do with the time that I’m running this process since most of the users were at lunch when it ran faster.  I usually run this process late at night so, hopefully, it’s just a timing issue.  Thanks for your help anyway.

@bpgraves if it’s a licensed one, I’d recommend you to check on ‘License Monitoring Console’ to see if you have any license warnings, because that may be the cause of the slowness.

I stopped using Acumatica Webhooks years ago because it was unreliable and I was missing data. I changed to exporting Generic Inquiry data every 3 minutes and haven’t lost any data since.