How To Fix RSAR420 - Communication structure & successfully activated

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 420

• Message text: Communication structure & successfully activated

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAR420 - Communication structure & successfully activated ?

  The SAP error message RSAR420 typically indicates an issue related to the communication structure in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) systems. This error often arises when there are problems with the data transfer process, particularly when using the SAP Data Transfer Process (DTP) or when dealing with InfoProviders.
  Cause:
  The RSAR420 error message can be caused by several factors, including:
  
  
  Communication Structure Issues: The communication structure may not be properly defined or activated. This can happen if there are changes made to the data model or if the structure has not been updated after a system upgrade.
  
  
  Data Transfer Process (DTP) Configuration: If the DTP is not correctly configured, it may lead to communication issues between the source and target systems.
  
  
  Missing or Incomplete Data: If the data being transferred is incomplete or if there are issues with the source data, it can trigger this error.
  
  
  Authorization Issues: Sometimes, the user executing the DTP may not have the necessary authorizations to access the data or execute the process.
  
  
  System Configuration: Incorrect settings in the SAP BW system or issues with the underlying database can also lead to this error.
  
  
  Solution:
  To resolve the RSAR420 error, you can follow these steps:
  
  
  Check Communication Structure:
  
  Go to transaction code RSA1 (Data Warehousing Workbench).
  Navigate to the relevant InfoProvider and check if the communication structure is activated.
  If it is not activated, activate it by selecting the structure and choosing the activation option.
  
  
  
  Review DTP Configuration:
  
  Check the configuration of the DTP involved in the data transfer.
  Ensure that the source and target settings are correct and that the DTP is properly set up.
  
  
  
  Validate Data:
  
  Ensure that the data in the source system is complete and valid.
  Check for any inconsistencies or missing data that could affect the transfer.
  
  
  
  Check Authorizations:
  
  Verify that the user executing the DTP has the necessary authorizations to access the data and perform the transfer.
  
  
  
  System Logs and Traces:
  
  Review system logs and traces for any additional error messages or warnings that could provide more context about the issue.
  Use transaction codes like SLG1 (Application Log) to check for logs related to the DTP execution.
  
  
  
  Re-activate InfoObjects:
  
  If changes were made to InfoObjects, consider re-activating them to ensure that all dependencies are correctly set.
  
  
  
  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
  RSPC: Process Chain Maintenance
  SLG1: Application Log
  
  
  SAP Documentation: Refer to SAP Help documentation for detailed information on DTPs and communication structures.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the RSAR420 error in your SAP BW or BI environment.