clients randomly experiencing error creating new list items due to column "_ColorHex" not being found

Ross Cullen 46 Reputation points


We have 2 clients using our sharepoint addin who are randomly experiencing an error adding new list items because "Field or property "_ColorHex" does not exist

We checked in our own tenant and this column exists, but it is not something we've added and is a critical issue because they cannot create new forms in the list


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  1. AllenXu-MSFT 16,796 Reputation points Microsoft Vendor

    Hi @Ross Cullen ,

    There seems to be something wrong in the Microsoft backend. Opening a ticket with Microsoft is recommended in this case as end users have no access to check Microsoft backend. Experts there will give you instant help.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

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  2. Joel Rodrigues 0 Reputation points MVP

    Just to add to the discussion, experienced issues with _AdditionalStreamSize on 4 client tenants today.

    Asked them to open support tickets as advised by @AllenXu-MSFT

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  3. Andy Morris 0 Reputation points

    Just wondering here - did anyone open support tickets and get resolution or update they can add here ?

    We are seeing this now with randomly timed fails on writes/updates due to this internal _AdditionalStreamSize column.