Thanks Eirikur. 

Strem_ID was never Null

CREATE TABLE [dbo].[AllDocs](
    [ID] [bigint] IDENTITY(1,1) NOT NULL,
    [Stream_ID] [uniqueidentifier] NOT NULL,
    [FileName] [nvarchar](100) NOT NULL,
    [ToProcess] [int] NOT NULL,
    [CreateDate] [datetime] NOT NULL,
CONSTRAINT [PK_AllDocs] PRIMARY KEY CLUSTERED
(
    [ID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

ALTER TABLE [dbo].[AllDocs] ADD DEFAULT ((0)) FOR [ToProcess]
GO