SP19 Managed Metadata Error

Question

Hello Everyone. We are facing an issue with a managed metadata field pointing to a term set. (site column field used in a site content type)
Error: microsoft.sharepoint.spduplicatevaluesfoundexception the list item could not be added or updated because duplicate values were found in the following filed(s) in the list : [Title]
at Microsoft.SharePoint.SPListItem.AddOrUpdateItem.
Any idea how to solve this bug? the metadata field was working properly.

COnfiguration DB Version: 16.0.10389.20000

Answer 1

Hi @Michel AL HAYEK
The cause of the error is that you set the column as unique, so the user cannot select the same value of this column twice. Please try to change the column setting like following pic

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Answer 2

@RaytheonXie_MSFT , the field type is managed metadata and the unique value option is set to false.