How To Fix RD173 - Error in the field catalog of the extractor

SAP Error Message - Details

• Message type: E = Error

• Message class: RD - CO-PA Connection to SAP BW

• Message number: 173

• Message text: Error in the field catalog of the extractor

What causes this issue?

Erroneous entries in the internal field catalog of the CO-PA extractor.

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?

Search notes for the message RD173. Write a problem message if you are
unable to find a suitable note. Specify "&V1&" as the diagnosis.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RD173 - Error in the field catalog of the extractor ?

  The SAP error message RD173, which states "Error in the field catalog of the extractor," typically occurs when there is an issue with the field catalog configuration for a data extractor in SAP. This error can arise in various contexts, such as during data extraction processes, especially when using SAP BW (Business Warehouse) or SAP Data Services.
  Causes of RD173 Error
  
  
  Field Catalog Mismatch: The field catalog defined for the extractor does not match the fields available in the underlying data source. This can happen if fields have been added, removed, or renamed in the source system.
  
  
  Data Type Issues: There may be discrepancies in data types between the source fields and the field catalog definitions. For example, if a field is defined as a character type in the catalog but is numeric in the source.
  
  
  Missing Fields: The extractor may be trying to access fields that are not present in the data source or have been deactivated.
  
  
  Configuration Errors: There may be errors in the configuration of the extractor itself, such as incorrect settings in the data source or the InfoObject.
  
  
  Transport Issues: If the extractor was transported from one system to another, there may be inconsistencies in the field catalog due to differences in the source systems.
  
  
  Solutions to RD173 Error
  
  
  Check Field Catalog: Review the field catalog for the extractor in transaction RSA2 (for DataSources) or RSA3 (for testing). Ensure that all fields listed in the catalog are present in the source system and correctly defined.
  
  
  Update DataSource: If there have been changes in the underlying data structure, you may need to update the DataSource. This can be done by using transaction RSA6 to regenerate the DataSource or by using the "Change DataSource" option.
  
  
  Data Type Verification: Verify that the data types of the fields in the field catalog match those in the source system. Adjust the field definitions in the extractor if necessary.
  
  
  Check for Missing Fields: Ensure that all required fields are present in the source system. If fields have been removed or renamed, update the extractor configuration accordingly.
  
  
  Transport Consistency: If the extractor was transported, ensure that all related objects (like InfoObjects, DataSources, etc.) are also transported correctly and are consistent across systems.
  
  
  Re-activate the DataSource: Sometimes, simply reactivating the DataSource can resolve the issue. This can be done in the DataSource maintenance transaction.
  
  
  Consult SAP Notes: Check for any relevant SAP Notes that may address known issues related to the RD173 error. SAP frequently updates its knowledge base with solutions for common problems.
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA2 (DataSource maintenance), RSA3 (DataSource testing), and RSA6 (DataSource overview).
  SAP BW Documentation: Review SAP BW documentation for best practices on configuring DataSources and field catalogs.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the RD173 error effectively. If the problem persists, consider reaching out to SAP support for further assistance.