How To Fix FSC1018 - Definition of tax on sales and purchases determination code &1 incomplete

SAP Error Message - Details

• Message type: E = Error

• Message class: FSC1 - FI-CA Extended: Message Class

• Message number: 018

• Message text: Definition of tax on sales and purchases determination code &1 incomplete

What causes this issue?

The system tried to determine valid tax on sales and purchases codes for
the tax on sales and purchases determination code &v1& for the period
from &v2& to &v3&.

System Response

Error message

How to fix this error?

There are gaps in the series of entries for this period.
INCLUDE FICA_NA_CUST_1 OBJECT DOKU ID TX

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 FSC1018 - Definition of tax on sales and purchases determination code &1 incomplete ?

  The SAP error message FSC1018, which states "Definition of tax on sales and purchases determination code &1 incomplete," typically occurs when there is an issue with the configuration of tax determination codes in the SAP system. This error is related to the tax calculation process in the Financial Accounting (FI) module, particularly when dealing with sales and purchases.
  Cause:
  The error is usually caused by one or more of the following reasons:
  
  
  Incomplete Configuration: The tax determination code specified in the error message is not fully configured. This could mean that certain required fields or settings are missing in the tax configuration.
  
  
  Missing Tax Codes: The tax codes that are supposed to be linked to the determination code may not be defined or activated in the system.
  
  
  Incorrect Assignment: The determination code may not be correctly assigned to the relevant tax categories or may not be linked to the appropriate tax codes.
  
  
  Data Inconsistencies: There may be inconsistencies in the master data or transaction data that reference the tax determination code.
  
  
  Solution:
  To resolve the FSC1018 error, you can follow these steps:
  
  
  Check Tax Determination Code Configuration:
  
  Go to the transaction code OBYZ (or navigate through the menu: SPRO > Financial Accounting > Tax on Sales/Purchases > Basic Settings > Check Tax Determination).
  Look for the determination code mentioned in the error message and ensure that it is fully configured. Check for any missing entries or settings.
  
  
  
  Verify Tax Codes:
  
  Ensure that the tax codes associated with the determination code are defined and active. You can check this in transaction code FTXP (for tax codes) to see if the relevant tax codes exist and are correctly set up.
  
  
  
  Review Assignments:
  
  Check the assignments of the determination code to the relevant tax categories. Make sure that the determination code is linked to the correct tax codes and that all necessary configurations are in place.
  
  
  
  Check Master Data:
  
  Review the master data (such as customer/vendor master records) to ensure that the correct tax determination code is assigned. You can check this in transaction codes like XD02 (for customer) or XK02 (for vendor).
  
  
  
  Consult Documentation:
  
  If you are unsure about the configuration, refer to SAP documentation or consult with your SAP functional consultant for guidance on the correct setup.
  
  
  
  Testing:
  
  After making the necessary changes, perform a test transaction to ensure that the error no longer occurs and that tax calculations are functioning as expected.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OBYZ (tax determination), FTXP (tax codes), and others related to tax configuration.
  SAP Notes: Check for any SAP Notes related to tax determination issues, as they may provide additional insights or solutions.
  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 identify and resolve the issue causing the FSC1018 error in your SAP system.