How To Fix RSTRAN856 - Could not find a 3.x InfoSource between source and target

SAP Error Message - Details

• Message type: E = Error

• Message class: RSTRAN - Messages for Transformation

• Message number: 856

• Message text: Could not find a 3.x InfoSource between source and target

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 RSTRAN856 - Could not find a 3.x InfoSource between source and target ?

  The SAP error message RSTRAN856 indicates that the system could not find a 3.x InfoSource between the source and target during a data transfer process, typically in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) data extraction and transformation.
  Cause:
  
  Missing InfoSource: The most common cause is that the specified InfoSource does not exist in the system or is not activated.
  Incorrect Source/Target Mapping: The source and target mappings may not be correctly defined, leading to the system being unable to locate the appropriate InfoSource.
  Transport Issues: If the InfoSource was recently transported from another system, it may not have been properly activated or may have dependencies that are not met.
  Version Compatibility: The InfoSource may not be compatible with the version of the source or target data objects.
  Authorization Issues: The user executing the data transfer may not have the necessary authorizations to access the InfoSource.
  
  Solution:
  
  Check InfoSource Existence: Verify that the InfoSource exists in the system. You can do this by navigating to the InfoSource maintenance transaction (e.g., RSA1) and checking the InfoSources under the relevant data source.
  Activate InfoSource: If the InfoSource exists but is not activated, activate it. This can be done in the InfoSource maintenance area.
  Review Source/Target Mapping: Ensure that the source and target mappings are correctly defined. Check the transformation rules and ensure that they point to the correct InfoSource.
  Transport Check: If the InfoSource was recently transported, ensure that all related objects were also transported and activated. Check for any transport errors.
  Authorization Check: Ensure that the user has the necessary authorizations to access the InfoSource and perform the data transfer.
  Debugging: If the issue persists, consider debugging the data transfer process to identify where the failure occurs.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to manage InfoSources and transformations.
  Documentation: Refer to SAP documentation for detailed information on InfoSources and data transfer processes.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: Engage with SAP community forums or support for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the issue related to the RSTRAN856 error message in SAP.