How To Fix DT857 - New client field & is placed at the start of the table

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 857

• Message text: New client field & is placed at the start of the table

What causes this issue?

The new version of the table supplied by SAP is client-specific. As the
client field is always the first field in the table, it is placed at
the beginning of the table.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT857 - New client field & is placed at the start of the table ?

  The SAP error message DT857 typically indicates an issue related to the data structure of a table, specifically concerning the placement of a new client field. This error arises when a new client field is added to a table, but it is not positioned at the beginning of the table structure, which is a requirement in SAP systems.
  Cause:
  
  Table Structure Modification: When a new client field (usually a field for client-specific data) is added to a database table, it must be the first field in the table. This is because SAP uses the client field to differentiate data for different clients in a multi-client environment.
  Inconsistent Table Definition: If the new client field is added after other fields, it violates the structural rules of the table definition in the SAP data dictionary.
  
  Solution:
  To resolve the DT857 error, you need to ensure that the new client field is positioned correctly in the table structure. Here are the steps to do this:
  
  
  Access the Data Dictionary (SE11):
  
  Go to transaction code SE11 (Data Dictionary).
  Enter the name of the table that is causing the error.
  
  
  
  Modify the Table Structure:
  
  Select the "Change" option to modify the table.
  If the new client field is not the first field, you will need to move it to the top of the field list.
  Ensure that the client field is defined as a CLIENT type (usually MANDT).
  
  
  
  Activate the Table:
  
  After making the necessary changes, activate the table to apply the new structure.
  Check for any other dependencies or related objects that may need to be adjusted.
  
  
  
  Test the Changes:
  
  After activation, test the changes to ensure that the error no longer occurs and that the table functions as expected.
  
  
  
  Related Information:
  
  Client Field: In SAP, the client field (usually MANDT) is used to separate data for different clients in a multi-client environment. Each client can have its own set of data, and the client field is crucial for this separation.
  Data Dictionary: The Data Dictionary (SE11) is a central repository in SAP that contains definitions of all database objects, including tables, views, data elements, and domains.
  Transport Requests: If you are working in a development environment, ensure that any changes made to the table structure are included in a transport request for proper migration to other environments (e.g., QA, Production).
  
  By following these steps, you should be able to resolve the DT857 error and ensure that your table structure adheres to SAP's requirements.