How To Fix RSTRAN812 - Transformation from an InfoSource to itself is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSTRAN - Messages for Transformation

• Message number: 812

• Message text: Transformation from an InfoSource to itself is 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 RSTRAN812 - Transformation from an InfoSource to itself is not allowed ?

  The SAP error message RSTRAN812 indicates that there is an attempt to perform a transformation from an InfoSource to itself, which is not allowed in SAP BW (Business Warehouse). This typically occurs when you are trying to create a transformation that maps data from an InfoSource back to the same InfoSource, which can lead to circular references and data integrity issues.
  Cause:
  
  Self-Referencing Transformation: The primary cause of this error is that the transformation is incorrectly set up to map data from an InfoSource to itself.
  Incorrect Data Flow Design: The data flow design may not be properly structured, leading to attempts to transform data in a way that violates SAP BW rules.
  
  Solution:
  To resolve the RSTRAN812 error, you can take the following steps:
  
  
  Check Transformation Settings:
  
  Go to the transformation that is causing the error.
  Ensure that the target of the transformation is not set to the same InfoSource as the source.
  
  
  
  Redesign Data Flow:
  
  If you need to transform data, consider creating a new target InfoObject or InfoProvider where the transformed data can be loaded.
  Ensure that the data flow is designed correctly, avoiding self-referencing transformations.
  
  
  
  Use a Different Target:
  
  If the intention is to update or modify the data, consider using a different target InfoProvider (like a DataStore Object or InfoCube) to store the transformed data.
  
  
  
  Review Data Model:
  
  Review the overall data model to ensure that the InfoSources and transformations are set up correctly and logically.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or guides on data modeling and transformations in BW for best practices and examples.
  
  
  
  Related Information:
  
  SAP BW Documentation: Check the official SAP Help Portal for detailed information on transformations and data modeling.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) to manage InfoSources and transformations.
  
  By following these steps, you should be able to resolve the RSTRAN812 error and ensure that your data transformations are set up correctly in SAP BW.