New answers tagged unsafe-updates
I used SPItemEventProperties.AfterProperties instead of inner SPListItem and it worked fine. Thanks for reply. I'l try to set Synchronous and check if it help.
The point is: you open a new SPWeb object (i.e. you don't use the contextual SPContext.Current.Web managed automatically by SharePoint on each request). Therefore, no FormDigest can help here: FormDigest ensures security on POST request for the contextual SPWeb only. AllowUnsafeUpdates helps here because it deactivates the security checks (both for GET ...
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