How To Fix DT340 - Column &-&: length in proxy object & is not the same

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 340

• Message text: Column &-&: length in proxy object & is not the same

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT340 - Column &-&: length in proxy object & is not the same ?

  The SAP error message DT340 typically indicates a mismatch in the length of a field in a proxy object compared to the corresponding field in the underlying data structure or database table. This error often arises in scenarios involving data transfer between systems, such as when using SAP Process Integration (PI) or SAP Process Orchestration (PO).
  Cause:
  
  Field Length Mismatch: The length of a field in the proxy object does not match the length defined in the corresponding data structure or database table. This can happen if the data model has been changed (e.g., a field length was increased or decreased) but the proxy object was not updated accordingly.
  Changes in Data Model: If there have been recent changes to the data model (e.g., in the ABAP Dictionary or in the structure of the IDoc), the proxy object may not reflect these changes.
  Incorrect Mapping: If the mapping between the source and target structures is not correctly defined, it can lead to length mismatches.
  
  Solution:
  
  Check Proxy Object: Review the proxy object definition in the SAP system. Ensure that the field lengths in the proxy match those in the underlying data structure or database table.
  Regenerate Proxy: If there have been changes to the underlying data structure, regenerate the proxy object. This can be done using transaction SPROXY or by using the relevant tools in the SAP PI/PO environment.
  Update Mapping: If you are using a mapping tool (like graphical mapping or XSLT), ensure that the mapping is correctly defined and that it respects the field lengths.
  Test Data: Check the data being sent to ensure that it does not exceed the defined lengths. If necessary, truncate or adjust the data before sending it through the proxy.
  Transport Changes: If the changes were made in a development environment, ensure that they are properly transported to the quality and production environments.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SPROXY to manage proxy objects and SE11 to check the data dictionary definitions.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on handling this error.
  Debugging: If the issue persists, consider debugging the process to identify where the mismatch occurs. This can help pinpoint whether the issue is in the data being sent, the mapping, or the proxy definition itself.
  
  By following these steps, you should be able to resolve the DT340 error and ensure that your proxy objects are correctly aligned with the underlying data structures.