How To Fix WP406 - Language code & cannot be converted

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 406

• Message text: Language code & cannot be converted

What causes this issue?

The conversion rule for language code &V1& is unknown.

System Response

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

How to fix this error?

<DS:SIMG.W_DF_VK_0123.SIMG_OPOS>Define a conversion rule for the
language code </>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP406 - Language code & cannot be converted ?

  The SAP error message:
  WP406 Language code & cannot be converted
  typically occurs when the system encounters a language code that it cannot recognize or convert during processing, often in HR (Human Resources) or Payroll modules where language-dependent data is handled.
  
  Cause
  
  The language code being processed is either invalid, not maintained, or not recognized by the SAP system.
  This can happen if:
  
  The language code is missing or blank.
  The language code is not defined in the system (transaction SMLT).
  The language code is incorrectly passed from an external system or during data migration.
  Custom programs or interfaces are passing an unsupported language code.
  
  
  The system tries to convert or interpret the language code but fails because it does not exist in the language code table.
  
  
  Solution
  
  
  Check the language code being used:
  
  Identify the language code causing the error (the placeholder & in the message will be replaced by the actual code in the system).
  Verify if this language code exists in the system.
  
  
  
  Verify language code maintenance:
  
  Use transaction SMLT to check if the language code is defined.
  If missing, add the required language code if it is valid and supported.
  
  
  
  Correct the data source:
  
  If the language code comes from an interface or data upload, correct the source data to use a valid language code.
  Ensure that the language code is passed correctly in the correct format (usually 2-character or 3-character codes depending on the system).
  
  
  
  Check custom code or user exits:
  
  If custom programs or enhancements are involved, debug to see how the language code is handled.
  Ensure that the code uses valid language codes and handles exceptions properly.
  
  
  
  SAP Notes and Support:
  
  Check SAP Notes for any known issues related to language code conversion errors.
  Sometimes patches or updates fix language code handling bugs.
  
  
  
  
  Related Information
  
  Transaction SMLT: Maintain language codes in SAP.
  Language codes in SAP: Usually ISO language codes like EN (English), DE (German), FR (French), etc.
  HR and Payroll modules: Language codes are often used for communication, forms, and reports.
  Data migration and interfaces: Common sources of invalid language codes.
  SAP Help Portal: Documentation on language codes and internationalization.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WP406 Language code & cannot be converted
  
  
  Cause
  Invalid or unrecognized language code in the system
  
  
  Solution
  Verify and maintain language codes in SMLT; correct source data; check custom code
  
  
  Related
  Transaction SMLT, HR/Payroll language handling, SAP Notes for language code issues
  
  
  
  
  If you provide the exact language code causing the error or the context (module, transaction, interface), I can help you with more specific guidance.