How To Fix RSOS021 - Search not performed; RFC connection to TREX engine is null

RSOS021 - Overview

• Message type: E = Error

• Message class: RSOS - Message class for BI Metadata Search with TREX

• Message number: 021

• Message text: Search not performed; RFC connection to TREX engine is null

What causes this issue?

RFC connection to TREX engine is Null.

System Response

Search is not possible.

How to fix this error?

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

Procedure for System Administrators

To enter the RFC connection:
Execute transaction <LB>RSODADMIN</>.
In the <LS>Administration of BW Metadata Search</> screen, in <LS>RFC
Destination</>, select the appropriate RFC destination.
Choose <LS>Execute.</>

Error message extract from SAP system. Copyright SAP SE.

RSOS021 - Details

• The SAP error message RSOS021: Search not performed; RFC connection to TREX engine is null typically indicates that there is an issue with the connection between the SAP system and the TREX (Text Retrieval and Extraction) engine, which is used for full-text search capabilities in SAP.
  
  Cause:
  
  RFC Connection Issues: The RFC (Remote Function Call) connection to the TREX engine may not be configured correctly or may be down.
  TREX Engine Not Running: The TREX engine itself may not be running or may have encountered an error.
  Network Issues: There could be network connectivity issues preventing the SAP system from reaching the TREX engine.
  Authorization Issues: The user or system may not have the necessary authorizations to access the TREX engine.
  Configuration Errors: Incorrect configuration settings in the SAP system or TREX settings can lead to this error.
  
  
  Solution:
  
  
  Check RFC Connection:
  
  Go to transaction SM59 in the SAP GUI.
  Check the RFC connection to the TREX engine. Ensure that