How To Fix RSRV089 - Check foreign key relationship between fact and dimension tables

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRV -

• Message number: 089

• Message text: Check foreign key relationship between fact and dimension tables

Description:
This elementary test checks the foreign key relationship between a fact
table and a dimensions table. It checks whether the dimension keys that
appear in the fact table in the column for the specified dimension are
the same keys that appear in the dimensions table (as key fields).
Note that there is no point in applying this test to the compressed
fact table of an InfoCube and its package dimensions, because all the
keys in the package dimension are set to the initial value zero in the
(compressed) fact table as a result of the compression process.
Parameters:
The test expects you to specify the following parameters: the name of
an InfoCube, the type of fact table (E or F table), and the name of the
dimension.

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

Repairs:
Repairs cannot be made. If you cannot eliminate this inconsistency
yourself, please send an error message to SAP.

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 RSRV089 - Check foreign key relationship between fact and dimension tables ?

  The SAP error message RSRV089 indicates that there is an issue with the foreign key relationship between fact and dimension tables in your SAP BW (Business Warehouse) system. This error typically arises during data modeling or when performing data consistency checks.
  Cause:
  The error usually occurs due to one or more of the following reasons:
  
  
  Missing Foreign Key Relationships: The foreign key relationship between the fact table and the dimension table is not properly defined or is missing.
  
  
  Data Inconsistencies: There may be inconsistencies in the data, such as records in the fact table that do not have corresponding entries in the dimension table.
  
  
  Incorrect Data Types: The data types of the keys in the fact and dimension tables may not match, leading to issues in establishing relationships.
  
  
  Deleted or Inactive Dimensions: If a dimension has been deleted or marked as inactive, it can lead to broken relationships with the fact table.
  
  
  Changes in Data Model: Changes made to the data model (like adding or removing attributes) without properly updating the relationships can also cause this error.
  
  
  Solution:
  To resolve the RSRV089 error, you can follow these steps:
  
  
  Check Foreign Key Relationships:
  
  Go to the Data Warehousing Workbench (transaction RSA1).
  Navigate to the InfoObject and check the foreign key relationships between the fact and dimension tables.
  Ensure that all necessary relationships are defined correctly.
  
  
  
  Data Consistency Check:
  
  Use transaction RSRV to perform a consistency check on the InfoProvider.
  Look for any inconsistencies reported and address them accordingly.
  
  
  
  Validate Data:
  
  Check the data in both the fact and dimension tables to ensure that all keys in the fact table have corresponding entries in the dimension table.
  You can run queries or use the Data Preview feature to inspect the data.
  
  
  
  Check Data Types:
  
  Ensure that the data types of the keys in both tables match. If they do not, you may need to adjust the data types in the InfoObjects.
  
  
  
  Review Changes:
  
  If there have been recent changes to the data model, review those changes to ensure that they have been implemented correctly and that all relationships are still valid.
  
  
  
  Re-activate InfoObjects:
  
  If you have made changes to the InfoObjects, you may need to re-activate them to ensure that the changes take effect.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes for any specific guidance related to your version of SAP BW.
  
  
  
  Related Information:
  
  Transaction Codes: RSRV (for consistency checks), RSA1 (for data modeling).
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to RSRV089.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP BW to avoid similar issues in the future.
  
  By following these steps, you should be able to identify and resolve the issues causing the RSRV089 error in your SAP BW system.