How To Fix OB420 - 'Tax Procedure From' is mandatory

SAP Error Message - Details

• Message type: E = Error

• Message class: OB - IS-OIL Downstream TDP messages

• Message number: 420

• Message text: 'Tax Procedure From' is mandatory

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message OB420 - 'Tax Procedure From' is mandatory ?

  The SAP error message OB420, which states "'Tax Procedure From' is mandatory," typically occurs in the context of configuring tax settings in the SAP system. This error indicates that a required field related to tax procedures has not been filled in or is missing in the configuration.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Configuration: The tax procedure has not been defined or is incomplete in the configuration settings.
  Incorrect Settings: The tax procedure settings may not be properly assigned to the relevant company code or country.
  Data Entry Error: There may be a data entry error where the field for the tax procedure has been left blank.
  
  Solution:
  To resolve the OB420 error, you can follow these steps:
  
  
  Check Tax Procedure Configuration:
  
  Go to the transaction code OBYZ (or navigate through the menu: SPRO > Financial Accounting > Financial Accounting Global Settings > Tax on Sales/Purchases > Basic Settings > Define Tax Procedures).
  Ensure that the tax procedure is defined correctly for the relevant country and that it is assigned to the appropriate company code.
  
  
  
  Assign Tax Procedure:
  
  If the tax procedure is missing, you need to assign the correct tax procedure to the company code. This can be done in the same configuration area where you defined the tax procedures.
  
  
  
  Review Company Code Settings:
  
  Check the company code settings to ensure that the tax procedure is linked correctly. You can do this by navigating to OBY6 (or through the menu: SPRO > Financial Accounting > Financial Accounting Global Settings > Tax on Sales/Purchases > Basic Settings > Assign Tax Procedures to Company Codes).
  
  
  
  Data Entry:
  
  If you are entering data in a transaction and encounter this error, ensure that you have filled in all mandatory fields, including the 'Tax Procedure From' field.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct tax procedure to use, consult your organization's tax documentation or reach out to your finance department for guidance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OBYZ (Define Tax Procedures) and OBY6 (Assign Tax Procedures to Company Codes).
  SAP Notes: Check SAP Notes for any specific updates or patches related to tax procedures that may address known issues.
  User Roles: Ensure that you have the necessary authorizations to make changes to tax configurations in the SAP system.
  
  By following these steps, you should be able to resolve the OB420 error and ensure that the tax procedure is correctly configured in your SAP system.