How To Fix /CFG/DSY001 - No namespace definition determined from TRESC for field &1 of table &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /CFG/DSY -

• Message number: 001

• Message text: No namespace definition determined from TRESC for field &1 of table &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CFG/DSY001 - No namespace definition determined from TRESC for field &1 of table &2 ?

  The SAP error message /CFG/DSY001 No namespace definition determined from TRESC for field &1 of table &2 typically indicates that there is an issue with the configuration of the Data Source (DSY) in the SAP system. This error arises when the system is unable to find a namespace definition for a specific field in a table, which is necessary for the data extraction or transformation process.
  Cause:
  
  Missing Namespace Definition: The most common cause is that the namespace definition for the specified field in the specified table is not defined in the TRESC (Table for Namespace Definitions).
  Incorrect Configuration: There may be an issue with the configuration of the Data Source or the related structures.
  Transport Issues: If the configuration was recently transported from another system, it might not have been transported correctly, leading to missing definitions.
  Custom Development: If the field is part of a custom development, it may not have been properly registered in the namespace.
  
  Solution:
  
  Check TRESC Table: Verify the entries in the TRESC table to ensure that the namespace for the specified field and table is defined. You can do this by executing the transaction code SE11 (Data Dictionary) and checking the TRESC table.
  Define Namespace: If the namespace is missing, you may need to define it. This can involve creating a new entry in the TRESC table for the field and table in question.
  Review Data Source Configuration: Go to the Data Source configuration and ensure that all necessary fields and their corresponding namespaces are correctly defined.
  Transport Check: If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and correctly imported.
  Consult Documentation: If the field is part of a standard SAP application, consult the relevant SAP documentation or notes for any specific requirements regarding namespace definitions.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is a production issue.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), and RSA1 (Data Warehousing Workbench) can be useful for checking configurations and definitions.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional guidance.
  Custom Development: If the field is part of a custom development, ensure that the development team is aware of the issue and can provide the necessary adjustments.
  
  By following these steps, you should be able to identify and resolve the issue related to the error message /CFG/DSY001.