How To Fix RSAU251 - No communication structure exists in version & for InfoSource &

RSAU251 - Overview

• Message type: E = Error

• Message class: RSAU - Update rules

• Message number: 251

• Message text: No communication structure exists in version & for InfoSource &

What causes this issue?

In order to be able to maintain the update rules an active communication
structure must be available.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

This error message can have two causes.
No active communication structure exists.
Activate the communication structure in the Data Warehousing Workbench.
No communication structure exists for the InfoSource.
Create a communication structure in the Data Warehousing Workbench for
the InfoSource.

Error message extract from SAP system. Copyright SAP SE.

RSAU251 - Details

• The SAP error message RSAU251 indicates that there is no communication structure available for a specific version and InfoSource in the context of SAP BW (Business Warehouse) data extraction. This error typically arises when trying to extract data from a source system, and it can be caused by several factors.
  
  Cause:
  
  Missing Communication Structure: The communication structure for the specified InfoSource has not been created or activated. This structure is essential for data extraction.
  Version Mismatch: The version specified in the error message may not correspond to an existing or valid version in the system.
  InfoSource Configuration: The InfoSource may not be properly configured or may not have been set up to work with the specified version.
  Transport Issues: If the InfoSource or its communication structure was recently transported from another system, it may not have been activated correctly.
  
  
  Solution:
  
  
  Check Communication Structure:
  
  Go to transaction code RSA1 (Data Warehousing Workbench).
  Navigate to the InfoSource in question and check