Overview
When multiple documents are dragged and dropped into M-Files Web and 'Create all' is selected, only part of the documents are created. Also, the following error for Unique sequences is shown in Windows event logs:
"UniqueIDSequence.cs, 385 (IL:318), Unable to save a unique ID sequence value for the object. Please try to check in the object again. (0x80131500)"
Solution
This is currently a known issue in M-Files Web and can happen when using Compliance Kit with Unique sequences enabled. The release availability with the fix can be tracked with ID 169282 through our release notes (https://www.m-files.com/m-files-online-release-notes/).
As a workaround try adding a smaller set of documents at one time or use the M-Files Client when you need to add multiple documents.
