How To Fix FDT_DSM020 - RFC connection &1: target system without Unicode support; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_DSM - BRFplus: Decision Service Manager

• Message number: 020

• Message text: RFC connection &1: target system without Unicode support; see long text

What causes this issue?

For the current definition of a managed system, you have entered an RFC
connection containing a target system without Unicode support.
If the rule definitions that you have maintained in the design time
system contain special characters which depend on a Unicode-enabled
environment, this can lead to unexpected effects at runtime:
Special characters used for short texts, texts, and descriptions of rule
objects may become unreadable in the managed system, thus making it
difficult and error-prone to use the system.
Special characters used as part of a rule definition may lead to syntax
errors during code generation.
Special characters used in comparison operations may lead to
misinterpretations during rule evaluation, thus raising the risk of
business logic errors and false decisions in the productive system.

System Response

You can activate and deploy your settings, but you should be aware of
the risks outlined above.

How to fix this error?

The risks outlined above are highly dependent on the particular
conditions in your system landscape. It is impossible for the system to
perform a reliable automatic risk estimation. Therefore, it is up to you
to thoroughly investigate the rule objects to be deployed and make sure
that no code page-related problems arise in the managed systems. We also
highly recommend carefully testing the behavior of the managed systems
to avoid any of the risks outlined above.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_DSM020 - RFC connection &1: target system without Unicode support; see long text ?

  The SAP error message FDT_DSM020 indicates that there is an issue with the RFC (Remote Function Call) connection to a target system that does not support Unicode. This error typically arises when you are trying to connect to a non-Unicode SAP system from a Unicode SAP system or vice versa.
  Cause:
  
  Non-Unicode Target System: The target system you are trying to connect to is a non-Unicode system, which means it cannot handle the character set used by Unicode systems.
  Mismatch in System Types: There is a mismatch between the character set of the source and target systems. For example, if your source system is Unicode and the target system is non-Unicode, this error will occur.
  Configuration Issues: There may be configuration issues in the RFC destination settings that do not properly account for the character set compatibility.
  
  Solution:
  
  Check System Compatibility: Ensure that both the source and target systems are compatible in terms of Unicode support. If the target system is non-Unicode, you may need to connect to a Unicode-compatible system.
  Use a Compatible RFC Destination: If you need to connect to a non-Unicode system, ensure that the RFC destination is configured correctly. You may need to create a new RFC destination that specifies the correct character set.
  Modify the Data Transfer Logic: If you are transferring data, consider modifying the data transfer logic to ensure that it is compatible with the non-Unicode system.
  Consult SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if this is a production environment.
  
  Related Information:
  
  RFC Connections: RFC connections are used in SAP to enable communication between different SAP systems or between SAP and non-SAP systems.
  Unicode vs. Non-Unicode: Unicode systems can handle a wider range of characters and languages compared to non-Unicode systems. This is important for global applications.
  SAP Basis Team: Involve your SAP Basis team to check the configuration of the RFC connections and to ensure that the systems are set up correctly.
  
  By addressing the compatibility between the systems and ensuring that the RFC connections are configured properly, you should be able to resolve the FDT_DSM020 error.