How To Fix 53645 - SPF: tax indicator is not flat-rate; flat-rate is set

SAP Error Message - Details

• Message type: E = Error

• Message class: 53 - Incentive Wages Data

• Message number: 645

• Message text: SPF: tax indicator is not flat-rate; flat-rate is set

What causes this issue?

You use a special feature for the public sector.The SPF is also taken
into account for dummy net calculation for the agreed gross amount. In
this way, only the flat-rate taxation is supported. An employee has a
different tax indicator in infotype 51 (supplementary pension fund).
The tax procedure was converted by the program to 'flat-rate'.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 53645 - SPF: tax indicator is not flat-rate; flat-rate is set ?

  The SAP error message 53645, which states "SPF: tax indicator is not flat-rate; flat-rate is set," typically occurs in the context of tax calculations in SAP, particularly when dealing with flat-rate tax indicators in financial transactions. This error indicates a mismatch between the tax indicator set for a transaction and the expected tax treatment.
  Cause:
  
  Tax Indicator Mismatch: The error arises when a transaction is configured to use a flat-rate tax indicator, but the actual tax indicator assigned to the transaction does not support flat-rate taxation.
  Configuration Issues: There may be incorrect settings in the tax configuration, such as the tax codes or tax indicators that are not aligned with the flat-rate settings.
  Document Type Settings: The document type used for the transaction may not be configured to allow flat-rate taxation.
  Master Data Issues: The master data (like vendor or customer master records) may have incorrect tax settings that do not correspond to the flat-rate tax treatment.
  
  Solution:
  
  Check Tax Indicator: Review the tax indicator assigned to the transaction. Ensure that it is set to a flat-rate tax indicator if flat-rate taxation is intended.
  Review Configuration: Go to the SAP configuration settings (transaction code SPRO) and check the tax configuration:
  
  Ensure that the tax codes and indicators are correctly set up to allow flat-rate taxation.
  Verify the settings for the relevant document types to ensure they support flat-rate tax.
  
  
  Adjust Master Data: If the error is related to master data, update the vendor or customer master records to ensure that the tax indicators are correctly set for flat-rate taxation.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on configuring tax settings and indicators.
  Testing: After making changes, test the transaction again to ensure that the error is resolved.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on tax configuration.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  OBYZ: For tax code determination.
  OB40: For defining tax indicators.
  FS00: For checking G/L account settings related to tax.
  
  
  User Exits and BAdIs: If custom logic is involved, check for any user exits or BAdIs that may affect tax calculations.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP functional consultant or your organization's SAP support team for further assistance.