How To Fix FKK_ID_BR304 - Same Tax Supplement cannot be assigned to both INSS and IRRF

FKK_ID_BR304 - Overview

• Message type: E = Error

• Message class: FKK_ID_BR - Message class for Brazil Withholding tax functionalities

• Message number: 304

• Message text: Same Tax Supplement cannot be assigned to both INSS and IRRF

Self-Explanatory Message

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FKK_ID_BR304 - Details

• The SAP error message FKK_ID_BR304 indicates that there is an issue with the assignment of tax supplements in the Brazilian payroll system. Specifically, it states that the same tax supplement cannot be assigned to both INSS (Instituto Nacional do Seguro Social) and IRRF (Imposto de Renda Retido na Fonte). This error typically arises when there is a configuration or data entry issue in the payroll setup.
  
  Cause:
  
  Duplicate Tax Supplement Assignment: The same tax supplement is mistakenly assigned to both INSS and IRRF in the payroll configuration.
  Incorrect Configuration: The payroll schema or tax configuration may not be set up correctly, leading to conflicts in tax calculations.
  Data Entry Errors: Incorrect entries in the employee master data or payroll processing data can lead to this error.
  
  
  Solution:
  
  
  Review Tax Supplement Assignments:
  
  Go to the configuration settings for tax supplements in the SAP system.
  Check the assignments for INSS and IRRF to ensure that the same tax supplement is