Still FK conflict, even after investigation - sql

Question

4.857 million rows went through the flow OK, and only 38.000 rows sent to error output. This due to a FK conflict. ---> "The INSERT statement conflicted with the FOREIGN KEY constraint "FK_FactTransactions_DimCustomer".
The conflict occurred in database "", table "dbo.DimCustomer", column 'CustomerNr'.".
My problem is, after some investigation, i can't identify any conflict in the primary table dbo.dimcustomer.
Lets take Mid(Named CustomerNr in the DB) "60534658" for an example and let us see.
Picture NR
1: This is a data-view draft of some of the rows that got sent to error output for analysis.
2: This is the table where its supposed to insert, notice that rows with the same CustomerNr already exists, because some rows of the same CustomerNr, for a strange reason, got inserted while others did not
3: And last. This is the actual primary table(Customer table), where the Mid(CustomerNr) reference clearly exists!
Am i missing something here? why is it still in conflict?
ty for any answers!
TABLE STRUCTURE:
CREATE TABLE [dbo].[DimCustomer](
[CustomerNr] [int] NOT NULL,
[CustomerID] [int] NULL,
[GeographyKey] [int] NULL,
[OrgNum] [nvarchar](50) NULL,
[CustomerName] [nvarchar](255) NULL,
[Adress] [nvarchar](255) NULL,
[ZipCode] [nvarchar](255) NULL,
[MCC_Code] [float] NULL,
CONSTRAINT [PK_Dim.Customer_1] PRIMARY KEY CLUSTERED
(
[CustomerNr] 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].[DimCustomer] WITH CHECK ADD CONSTRAINT [FK_DimCustomer_DimGeography] FOREIGN KEY([GeographyKey])
REFERENCES [dbo].[DimGeography] ([GeographyKey])
GO
ALTER TABLE [dbo].[DimCustomer] CHECK CONSTRAINT [FK_DimCustomer_DimGeography]
GO
CREATE TABLE [dbo].[FactTransactions](
[TransactionKey] [int] IDENTITY(1,1) NOT NULL,
[Reportdate] [date] NULL,
[CustomerNr] [int] NULL,
[SchemeID] [smallint] NULL,
[PriceType] [int] NULL,
[Count] [int] NULL,
[Amount] [float] NULL,
[Commission] [float] NULL,
[InterchangeFee] [float] NULL,
[Currency] [nvarchar](3) NULL,
[FeeType] [int] NULL,
CONSTRAINT [PK_FactTransactions] PRIMARY KEY CLUSTERED
(
[TransactionKey] 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].[FactTransactions] WITH CHECK ADD CONSTRAINT [FK_FactTransactions_DimCardScheme] FOREIGN KEY([SchemeID])
REFERENCES [dbo].[DimCardScheme] ([SchemeID])
GO
ALTER TABLE [dbo].[FactTransactions] CHECK CONSTRAINT [FK_FactTransactions_DimCardScheme]
GO
ALTER TABLE [dbo].[FactTransactions] WITH CHECK ADD CONSTRAINT [FK_FactTransactions_DimCustomer] FOREIGN KEY([CustomerNr])
REFERENCES [dbo].[DimCustomer] ([CustomerNr])
GO
ALTER TABLE [dbo].[FactTransactions] CHECK CONSTRAINT [FK_FactTransactions_DimCustomer]
GO
ALTER TABLE [dbo].[FactTransactions] WITH CHECK ADD CONSTRAINT [FK_FactTransactions_DimDate] FOREIGN KEY([Reportdate])
REFERENCES [dbo].[DimDate] ([Date])
GO
ALTER TABLE [dbo].[FactTransactions] CHECK CONSTRAINT [FK_FactTransactions_DimDate]
GO
ALTER TABLE [dbo].[FactTransactions] WITH CHECK ADD CONSTRAINT [FK_FactTransactions_DimPriceType] FOREIGN KEY([PriceType])
REFERENCES [dbo].[DimPriceType] ([PriceType])
GO
ALTER TABLE [dbo].[FactTransactions] CHECK CONSTRAINT [FK_FactTransactions_DimPriceType]
GO
Example error output line:
2015-05-01,60534658,1,1,57,484,5280,3000000000002,78,340000000000003,0,EUR,57,1

Answer 1

Maybe you have some FactTrancsactions pointing to a customer which doesn't exist.
Try this statement to check if there are some transaction pointing to the wrong customer. Each row returned by this statement will bounce if you create the foreign key.
SELECT ft.*
FROM dbo.FactTransactions as ft
LEFT JOIN dbo.DimCustomer as dc
ON ft.CustomerNr = dc.CustomerNr
WHERE dc.CustomerNr IS NULL