How To Fix FX018 - Program error: Line variant list class is unknown

FX018 - Overview

• Message type: E = Error

• Message class: FX - Distributed FI Application Messages

• Message number: 018

• Message text: Program error: Line variant list class is unknown

What causes this issue?

Program error: The list class &V1& for the line layout variants for
external documents is not known to the system.

System Response

No actions were carried out.

How to fix this error?

You cannot eliminate this error. Please contact the FI hotline of
SAP under the usual telephone numbers.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FX018 - Program error: Line variant list class is unknown ?

  The SAP error message FX018, which states "Program error: Line variant list class is unknown," typically occurs in the context of financial reporting or when dealing with line item variants in SAP. This error can arise due to several reasons, including configuration issues, missing or incorrect settings, or problems with the underlying program logic.
  Causes:
  
  Missing Line Variant: The line variant that is being referenced in the report or transaction may not exist or may not be properly defined in the system.
  Incorrect Configuration: The configuration settings for the line variant may be incorrect or incomplete.
  Authorization Issues: The user may not have the necessary authorizations to access the line variant.
  Program Errors: There may be a bug or issue in the underlying ABAP program that is causing the error.
  Transport Issues: If the line variant was recently transported from another system, it may not have been properly activated or may be missing dependencies.
  
  Solutions:
  
  
  Check Line Variant