UpdateListItems not working

[kat-hughes]

I have a script I've been running for months that uses shareplum to update various columns of a SharePoint List using UpdateListItems(kind = 'Update'). It has suddenly stopped working and I've no idea why. I don't get any error messages but the changes are not showing up. Creating a new item is working fine, it's only when I try to update an existing list item. I use the Office365 version of SharePoint.

It's a relatively large list with over 500 items and over 100 columns. The maximum list item ID is 1051.

I can update the list items of other Lists, so it must be an issue with the List itself. Since I'm not getting any error message I don't know how to check what could be wrong. Any help would be appreciated.

UPDATE: When I print out the results of the response in the update_list_items() function, I get this error message: '0x80070057', 'Bad parameter passed to Web Server Extensions. Check the information you entered and try again.'

[DanielSkalar]

Hey!
Had the same issue and I found the problem.

In my case the problem was a Lookup column with selected items on the 'Add a column to show each of these additional fields:' option.
This option is available to display on your list columns of another list.
https://techcommunity.microsoft.com/t5/image/serverpage/image-id/329113iF478D0C0EEA0D5DC/image-size/large?v=v2&px=999

I would suggest to do the same that I have done:
Create a new column on your list.
run a script for each item of your list to add a tag on that column.
Check the difference between the rows with and without tag.

Maybe someone can fix the library.