"Derived Column" failed because truncation occurred !!!!

Question

HI Friends, 
I have got this Error so My package execution keep Failing so Please find my error Below.
Error Message : 
Executed as user: BSSLOCAL\DB-CLUS-SQL-Server. Microsoft (R) SQL Server Execute Package Utility  Version 11.0.2100.60 for 32-bit  Copyright (C) Microsoft Corporation. All rights reserved.    Started:  08:41:00  Error: 2014-02-03
08:41:13.92     Code: 0xC020902A     Source: Upload to Sharepoint Derived Column [14]     Description:The "Derived Column" failed because truncation occurred, and the truncation row disposition
on "Derived Column.Outputs[Derived Column Output].Columns[SDate]" specifies failure on truncation. A truncation error occurred on the specified object of the specified component.  End Error  Error: 2014-02-03 08:41:13.95     Code:
0xC0047022     Source: Upload to Sharepoint SSIS.Pipeline     Description: SSIS Error Code DTS_E_PROCESSINPUTFAILED.  The ProcessInput method on component "Derived Column" (14) failed with error code 0xC020902A while processing
input "Derived Column Input" (15). The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.  There
may be error messages posted before this with more information about the failure.  End Error  DTExec: The package execution returned DTSER_FAILURE (1).  Started:  08:41:00  Finished: 08:41:17  Elapsed:  17.5 seconds.  The
package execution failed.  The step failed.
Please give me how Can I rectify This Error Thanks For Advance.

Answer 1

Hi Cherukuri19,
If I understand correctly, you checked the data type of the input column from the Advanced Editor for the Derived Column component, right? Based on the error message, it seems that the data length of the target column outputted by the component above the
Derived Column (may be the Source Component) is more than 10 characters. However, you just modify the Input Column data type and length from the Derived Column component, hence, the data truncation error occurs. In this condition, you can avoid this issue
by using the following steps:
Keep the original nature of the SDate Input Column, e.g. don’t set the data type of this column to [DT_STR] or set its length.
Use the following expression instead for the Derived Column:
(DT_STR,10,1252)((DT_DBDATE)SDate)
Regards,
Mike Yin
TechNet Community Support