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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / Cloud Migration Table ...
Small and medium business | Business Central, N...
Suggested Answer

Cloud Migration Table Failures

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Posted on by RD-17112331-0 20
Hello, 
 
We are performing a cloud migration from GP to BC cloud, and 24 tables are failing, and all with the same message as shown below. The error is very vague with no reference to a row or column.  We enabled telemetry for the environment and reviewed the traces.  The traces provide no more detail about the errors. 
 
Some of tables that are failing have millions or records, so we cannot possibly review every one. 
 
Does anyone know how to find more information about the bad records so they can be corrected?
 
Thank you.
 
 
Failure happened on 'Source' side. ErrorCode=UserErrorWriteFailedFileOperation,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=The file operation is failed, upload file failed at path: 'msft1a6720t37109486/eb2c4100-52fb-4fd7-9450-467c08d2878c/data_eb2c4100-52fb-4fd7-9450-467c08d2878c_db4f7915-17c5-484a-a105-e3444199b34e.txt'.,Source=Microsoft.DataTransfer.Common,''Type=System.Data.SqlClient.SqlException,Message=Error converting data type numeric to nvarchar.,Source=.Net SqlClient Data Provider,SqlErrorNumber=8114,Class=16,ErrorCode=-2146232060,State=
errors.png
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Dynamics 365 Business Central migration
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  • Suggested answer
    OussamaSabbouh Profile Picture
    OussamaSabbouh 12,803 Super User 2026 Season 1 on at
    Hello,
     
    Your failing GP→BC cloud migration tables all point to one root cause:
    A numeric field in GP contains values that cannot be converted to NVARCHAR during export.
    This triggers SQL error and causes the migration step to fail.
    To find the bad records, run this in SQL:
     
    SELECT *
    FROM <Table>
    WHERE TRY_CONVERT(NVARCHAR(50), <NumericColumn>) IS NULL
          AND <NumericColumn> IS NOT NULL;

    This will immediately show the rows that are breaking the migration.
    Fix those values → rerun the step → migration succeeds.
     
    Regards,
    Oussama Sabbouh
  • RD-17112331-0 Profile Picture
    RD-17112331-0 20 on at
    Thank you for the recommendation. Unfortunately, it did not resolve the issue.  I ran the queries against every column in one of the failed tables and no rows were returned.  Any other ideas related to pinpointing the issue would be greatly appreciated.
  • RD-17112331-0 Profile Picture
    RD-17112331-0 20 on at
    PS I also ran queries using isnumeric() on all relevant columns, and no errors were returned.

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