How To Fix RSSM_TT026 - Error in DTP &1; update mode cannot be determined

SAP Error Message - Details

• Message type: E = Error

• Message class: RSSM_TT - Transfer Tool

• Message number: 026

• Message text: Error in DTP &1; update mode cannot be determined

What causes this issue?

The update mode of data transfer process &V1& cannot be determined.

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?

Check and reactivate the data transfer process &V1&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSSM_TT026 - Error in DTP &1; update mode cannot be determined ?

  The SAP error message RSSM_TT026, which states "Error in DTP &1; update mode cannot be determined," typically occurs in the context of Data Transfer Processes (DTP) in SAP BW (Business Warehouse). This error indicates that the system is unable to determine the update mode for the specified DTP, which can hinder data loading processes.
  Causes:
  
  Missing or Incorrect DTP Configuration: The DTP may not be properly configured, leading to ambiguity in determining the update mode.
  Inconsistent Source or Target InfoObjects: If there are inconsistencies in the source or target InfoObjects, the system may not be able to ascertain how to handle the data transfer.
  DataSource Issues: Problems with the underlying DataSource can also lead to this error, especially if the DataSource is not correctly set up or activated.
  Transformation Issues: If there are issues with the transformation rules associated with the DTP, it may prevent the system from determining the update mode.
  Versioning Issues: If there are multiple versions of the DTP or if the DTP is not activated, it can lead to this error.
  
  Solutions:
  
  Check DTP Configuration: Review the DTP settings to ensure that all required fields are correctly filled out and that the update mode is explicitly defined.
  Validate Source and Target InfoObjects: Ensure that the InfoObjects used in the DTP are consistent and correctly defined in both the source and target systems.
  Review DataSource: Check the DataSource for any issues. Make sure it is activated and that the connection to the source system is functioning correctly.
  Examine Transformations: Look at the transformations associated with the DTP. Ensure that they are correctly defined and that there are no errors in the transformation logic.
  Check for Version Conflicts: If there are multiple versions of the DTP, ensure that you are using the correct version and that it is activated.
  Recreate the DTP: If the issue persists, consider recreating the DTP from scratch to ensure that all settings are correctly applied.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to access the DTP and related objects.
  Logs and Traces: Check the logs for more detailed error messages that can provide additional context. You can use transaction SLG1 to view application logs.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  Documentation: Refer to SAP BW documentation for best practices on configuring DTPs and troubleshooting common issues.
  
  By following these steps, you should be able to identify the root cause of the RSSM_TT026 error and implement a solution to resolve it.