Getting *System.InvalidOperationException: The object to update was not found in the identity map.* when updating an entry..

[MohitNaroliya]

I am struggling to update a contentitem entry, when I execute the update method it throws - System.InvalidOperationException: The object to update was not found in the identity map.

Downloaded YesSQL repo source and check that exception throw when the documentId doesn't found for the entry, I checked each of the tables documentid and contentitem id but it looks the same as other entries. All other entry updation working fine.