How To Fix RSTRAN080 - You cannot select any other source segment for this target segment

SAP Error Message - Details

• Message type: E = Error

• Message class: RSTRAN - Messages for Transformation

• Message number: 080

• Message text: You cannot select any other source segment for this target segment

What causes this issue?

A target segment can be assigned to one source segment only.
Rules already exist between the source and target segment. You cannot
switch to a different source segment and keep the same target segment.

System Response

The source segment is selected and the target segment is removed from
the display.

How to fix this error?

Select a target segment that is not assigned to a source segment.
If you do not want to assign the source segment to the displayed target
segment, select the target segment and then delete the existing rules.
You can then create rules for another source segment.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSTRAN080 - You cannot select any other source segment for this target segment ?

  The SAP error message RSTRAN080, which states "You cannot select any other source segment for this target segment," typically occurs in the context of data transfer processes, particularly when working with SAP BW (Business Warehouse) or SAP BI (Business Intelligence) systems. This error indicates that there is an issue with the mapping of source segments to target segments in a data transfer process.
  Cause:
  
  Incorrect Mapping: The error usually arises when there is an attempt to map multiple source segments to a single target segment, which is not allowed. Each target segment can only be associated with one source segment.
  Data Transfer Process Configuration: The configuration of the data transfer process may not be set up correctly, leading to conflicts in the source-target mapping.
  Data Source Changes: If there have been changes to the data source or the structure of the data, it may lead to inconsistencies in the mapping.
  Inconsistent Data: If the data being loaded does not conform to the expected structure or format, it can trigger this error.
  
  Solution:
  
  Review Mapping: Check the mapping configuration in the data transfer process. Ensure that each target segment is correctly mapped to a single source segment.
  Adjust Data Transfer Process: If necessary, modify the data transfer process to ensure that the source and target segments are aligned correctly.
  Check Data Source: Verify that the data source is correctly defined and that there have been no changes that could affect the mapping.
  Test with Sample Data: Run a test with a small set of data to see if the error persists. This can help isolate the issue.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on configuring data transfer processes and resolving mapping issues.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  SAP BW/BI Documentation: Familiarize yourself with the data transfer process and mapping guidelines in SAP BW/BI.
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to access and manage data transfer processes.
  Support Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to identify and resolve the cause of the RSTRAN080 error in your SAP environment.