How To Fix RSWADBACKEND026 - Input and output to identical file name list &1 not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSWADBACKEND - Message for Backend Web-Designtime Operation

• Message number: 026

• Message text: Input and output to identical file name list &1 not allowed

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSWADBACKEND026 - Input and output to identical file name list &1 not allowed ?

  The SAP error message RSWADBACKEND026 indicates that there is an issue with the input and output file names being the same in a data transfer process, specifically when using the SAP Data Transfer Process (DTP) or similar functionalities. This error typically arises when you are trying to read from and write to the same file, which is not allowed.
  Cause:
  The primary cause of this error is that the system is trying to use the same file name for both input and output operations. This can happen in scenarios such as:
  
  When configuring a DTP or data extraction process where the source and target file names are mistakenly set to the same value.
  When using a program or report that requires separate file names for reading and writing data.
  
  Solution:
  To resolve this error, you need to ensure that the input and output file names are different. Here are the steps you can take:
  
  
  Check Configuration: Review the configuration of the DTP or the program that is generating the error. Make sure that the input file name and the output file name are distinct.
  
  
  Modify File Names: Change either the input or output file name to ensure they are not identical. This can usually be done in the settings or parameters of the data transfer process.
  
  
  Test the Changes: After making the necessary changes, run the process again to verify that the error has been resolved.
  
  
  Consult Documentation: If you are unsure about how to change the file names or if the error persists, consult the SAP documentation or help resources related to the specific transaction or program you are using.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or updates regarding this error message.
  Transaction Codes: Familiarize yourself with transaction codes related to data transfer processes, such as RSA1 (Data Warehousing Workbench) or RSPC (Process Chain Maintenance).
  Logs and Traces: Review logs and traces for more detailed information about the error, which can help in troubleshooting.
  
  By ensuring that the input and output file names are distinct, you should be able to resolve the RSWADBACKEND026 error effectively.