How To Fix WP427 - Tax classifier & cannot be converted

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 427

• Message text: Tax classifier & cannot be converted

What causes this issue?

The conversion rule for tax classifier &V1& is not known.

System Response

The record cannot be prepared in POS - interface outbound processing.
The document cannot be booked in the SAP system in POS - interface
inbound processing.

How to fix this error?

Define the conversion rule for the tax classifier.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP427 - Tax classifier & cannot be converted ?

  The SAP error message WP427: Tax classifier & cannot be converted typically occurs during tax determination or tax calculation processes, especially in the context of sales and distribution (SD) or financial accounting (FI) modules.
  
  Cause
  
  The error indicates that the system is unable to convert or interpret the tax classifier value during tax determination.
  This usually happens when the tax classifier (a key or code used to classify tax conditions) is missing, incorrect, or not maintained properly in the tax condition records or tax procedure.
  It can also occur if there is a mismatch between the tax classification in the master data (e.g., customer or material tax classification) and the tax condition records.
  Another cause might be an inconsistency or missing configuration in the tax procedure or tax condition tables.
  
  
  Solution
  
  
  Check Tax Classifier Configuration:
  
  Verify the tax classifier values in the tax condition records (transaction codes like VK11, VK12).
  Ensure that the tax classifier used in the condition