How To Fix RSAR426 - Import of the communication structure & failed.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 426

• Message text: Import of the communication structure & failed.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAR426 - Import of the communication structure & failed. ?

  The SAP error message RSAR426 indicates that there was a failure in importing the communication structure for a DataSource. This typically occurs in the context of SAP BW (Business Warehouse) when trying to replicate or import data from a source system.
  Cause:
  The error can be caused by several factors, including:
  
  Missing or Incomplete DataSource: The DataSource you are trying to import may not be fully defined or may be missing necessary components.
  Communication Structure Issues: The communication structure (e.g., the structure that defines how data is transferred) may not be correctly set up or may have been changed in the source system.
  Authorization Issues: The user executing the import may not have the necessary authorizations to access the DataSource or the underlying tables.
  Technical Issues: There may be technical issues such as network problems, system downtime, or inconsistencies in the source system.
  Version Mismatch: The version of the DataSource in the source system may not match the version expected by the BW system.
  
  Solution:
  To resolve the RSAR426 error, you can follow these steps:
  
  
  Check DataSource Definition:
  
  Go to the source system and verify that the DataSource is correctly defined and active.
  Ensure that the communication structure is properly set up.
  
  
  
  Recheck Communication Structure:
  
  In the BW system, check the communication structure for the DataSource. You can do this in transaction RSA1 under the DataSource settings.
  If necessary, regenerate the communication structure.
  
  
  
  Check Authorizations:
  
  Ensure that the user executing the import has the necessary authorizations to access the DataSource and the underlying data.
  
  
  
  Check for Technical Issues:
  
  Verify that there are no network issues or downtime in the source system.
  Check the system logs for any additional error messages that may provide more context.
  
  
  
  Re-import the DataSource:
  
  If the above steps do not resolve the issue, try to delete the DataSource from the BW system and re-import it from the source system.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  RSA1: Data Warehousing Workbench
  RSA3: Test DataSource
  RSO2: Maintain DataSource
  
  
  SAP Notes: Search for specific SAP Notes related to RSAR426 for any known issues or patches.
  Documentation: Review SAP documentation on DataSource replication and communication structures for best practices and troubleshooting tips.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.