How To Fix RSAU301 - No constants have been assigned to the InfoObject & (data field: &)

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAU - Update rules

• Message number: 301

• Message text: No constants have been assigned to the InfoObject & (data field: &)

What causes this issue?

You marked that the characteristic should be updated with a constant,
but you did not specify a constant.

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?

Choose a constant with the F4 help or enter one directly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSAU301 - No constants have been assigned to the InfoObject & (data field: &) ?

  The SAP error message RSAU301 indicates that there are no constants assigned to the InfoObject specified in the error message. This typically occurs in the context of SAP BW (Business Warehouse) when working with InfoObjects, which are the building blocks of the data model in BW.
  Cause:
  The error can arise due to several reasons:
  
  Missing Constants: The InfoObject in question does not have any constants defined. Constants are used to filter or restrict data during data extraction or reporting.
  Incorrect Configuration: The InfoObject may not be properly configured in the data model or in the transformation rules.
  Data Source Issues: The data source from which the InfoObject is supposed to pull data may not be set up correctly, leading to the absence of constants.
  Transport Issues: If the InfoObject was transported from another system, it may not have been fully configured in the target system.
  
  Solution:
  To resolve the RSAU301 error, you can take the following steps:
  
  
  Check InfoObject Configuration:
  
  Go to the InfoObject maintenance transaction (e.g., RSA1) and check the configuration of the InfoObject. Ensure that constants are defined for the InfoObject.
  
  
  
  Define Constants:
  
  If constants are missing, you can define them in the InfoObject settings. Navigate to the "Constants" tab in the InfoObject maintenance screen and add the necessary constants.
  
  
  
  Review Transformation Rules:
  
  Check the transformation rules associated with the InfoObject. Ensure that the mapping is correct and that the InfoObject is being populated as expected.
  
  
  
  Check Data Source:
  
  Verify that the data source from which the InfoObject is supposed to extract data is correctly configured and active. Ensure that the data source is returning data as expected.
  
  
  
  Transport Check:
  
  If the InfoObject was transported from another system, ensure that all related objects (like data sources, transformations, etc.) were also transported and configured correctly in the target system.
  
  
  
  Test Data Load:
  
  After making the necessary changes, perform a test data load to see if the issue is resolved. Monitor the process for any further errors.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like RSA1 (Data Warehousing Workbench) and RSO2 (DataSource Maintenance) to manage InfoObjects and data sources.
  Documentation: Refer to SAP Help documentation for detailed guidance on InfoObject configuration and data modeling in BW.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to the RSAU301 error.
  
  By following these steps, you should be able to identify and resolve the issue causing the RSAU301 error in your SAP BW environment.