How To Fix FS890 - Tax event & has not been assigned an RFC function to for ext. system

SAP Error Message - Details

• Message type: E = Error

• Message class: FS - Messages from Tax Routines / Prenumbered Checks

• Message number: 890

• Message text: Tax event & has not been assigned an RFC function to for ext. system

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FS890 - Tax event & has not been assigned an RFC function to for ext. system ?

  The SAP error message FS890 indicates that a tax event has not been assigned an RFC (Remote Function Call) function for an external system. This typically occurs in the context of tax calculation processes where SAP needs to communicate with an external tax service or system.
  Cause:
  
  Missing Configuration: The error usually arises when the necessary configuration for the tax event in question has not been set up in the SAP system. This could mean that the system does not know which RFC function to call for the specific tax event.
  Incorrect Mapping: The mapping between the tax event and the corresponding RFC function may be incorrect or missing.
  External System Issues: There may be issues with the external tax system itself, such as it being down or not properly configured to receive requests from SAP.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for tax calculation in your SAP system. This is usually found in the SPRO transaction under Financial Accounting (FI) > Tax on Sales/Purchases > Basic Settings > Define Tax Events.
  Ensure that the tax event in question is properly configured and that an RFC function is assigned to it.
  
  
  
  Assign RFC Function:
  
  If the RFC function is not assigned, you will need to assign the appropriate RFC function to the tax event. This may involve creating a new RFC function module or linking to an existing one that handles the tax event.
  
  
  
  Review External System Settings:
  
  Check the settings and availability of the external tax system. Ensure that it is operational and that the necessary interfaces are correctly set up to receive requests from SAP.
  
  
  
  Testing:
  
  After making the necessary changes, perform a test to ensure that the tax event can now be processed without errors.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to tax event configuration and RFC settings for more detailed guidance.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the FS890 error. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (for configuration), SE37 (for function modules), and ST22 (for dumps) to troubleshoot further.
  Support: If the issue persists after checking the configuration and external system, consider reaching out to SAP support or your internal SAP team for assistance.
  
  By following these steps, you should be able to resolve the FS890 error and ensure that the tax events are correctly processed in your SAP system.