why do i keep getting error in ssis using data conversion excel to oledb destination

i keep getting this error

SSIS package "C:\Users\olumi\onedrive\documents\visual studio 2015\Projects\Mortgage Project Main\Mortgage Project Main\Package1.dtsx" starting.
Information: 0x4004300A at Data Flow Task 1, SSIS.Pipeline: Validation phase is beginning.
Information: 0x4004300A at Data Flow Task 1, SSIS.Pipeline: Validation phase is beginning.
Warning: 0x80049304 at Data Flow Task 1, SSIS.Pipeline: Warning: Could not open global shared memory to communicate with performance DLL; data flow performance counters are not available.  To resolve, run this package as an administrator, or on the system's console.
Information: 0x40043006 at Data Flow Task 1, SSIS.Pipeline: Prepare for Execute phase is beginning.
Information: 0x40043007 at Data Flow Task 1, SSIS.Pipeline: Pre-Execute phase is beginning.
Information: 0x4004300C at Data Flow Task 1, SSIS.Pipeline: Execute phase is beginning.
Error: 0xC0202009 at Data Flow Task 1, OLE DB Destination [133]: SSIS Error Code DTS_E_OLEDBERROR.  An OLE DB error has occurred. Error code: 0x80004005.
An OLE DB record is available.  Source: "Microsoft SQL Server Native Client 11.0"  Hresult: 0x80004005  Description: "Unspecified error".
Error: 0xC020901C at Data Flow Task 1, OLE DB Destination [133]: There was an error with OLE DB Destination.Inputs[OLE DB Destination Input].Columns[Copy of SSN] on OLE DB Destination.Inputs[OLE DB Destination Input]. The column status returned was: "The value violated the integrity constraints for the column.".
Error: 0xC0209029 at Data Flow Task 1, OLE DB Destination [133]: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR.  The "OLE DB Destination.Inputs[OLE DB Destination Input]" failed because error code 0xC020907D occurred, and the error row disposition on "OLE DB Destination.Inputs[OLE DB Destination Input]" specifies failure on error. An error occurred on the specified object of the specified component.  There may be error messages posted before this with more information about the failure.
Error: 0xC0047022 at Data Flow Task 1, SSIS.Pipeline: SSIS Error Code DTS_E_PROCESSINPUTFAILED.  The ProcessInput method on component "OLE DB Destination" (133) failed with error code 0xC0209029 while processing input "OLE DB Destination Input" (146). 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.
Information: 0x40043008 at Data Flow Task 1, SSIS.Pipeline: Post Execute phase is beginning.
Information: 0x4004300B at Data Flow Task 1, SSIS.Pipeline: "OLE DB Destination" wrote 31 rows.
Information: 0x40043009 at Data Flow Task 1, SSIS.Pipeline: Cleanup phase is beginning.
Task failed: Data Flow Task 1
Warning: 0x80019002 at Package1: SSIS Warning Code DTS_W_MAXIMUMERRORCOUNTREACHED.  The Execution method succeeded, but the number of errors raised (4) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
SSIS package "C:\Users\olumi\onedrive\documents\visual studio 2015\Projects\Mortgage Project Main\Mortgage Project Main\Package1.dtsx" finished: Failure.
The program '[12516] DtsDebugHost.exe: DTS' has exited with code 0 (0x0).