How To Fix WTY201 - Incorrect item type &1 item &2 for generation function

WTY201 - Overview

• Message type: E = Error

• Message class: WTY - Warranty processing

• Message number: 201

• Message text: Incorrect item type &1 item &2 for generation function

What causes this issue?

Item type <LS>List</> (<LS>EXP</>) has to be selected if you want to be
able to execute this function. Only then can new items be created
(exploded) from this item.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WTY201 - Incorrect item type &1 item &2 for generation function ?

  The SAP error message:
  WTY201 Incorrect item type &1 item &2 for generation function
  
  
  Cause:
  This error occurs during the generation of a payment medium or payment file in SAP (usually in the context of payment program or payment medium workbench). It indicates that the item type of a line item (e.g., invoice, credit memo, or payment item) is not compatible or allowed for the specific generation function being executed.
  In other words, the payment medium generation function expects certain types of items (like invoices or payments), but it encountered an item with an incorrect or unexpected item type.
  
  Explanation:
  
  Item type &1: This is the type of the item that caused the error (e.g., 'I' for invoice, 'P' for payment, etc.).
  Item &2: This is the specific item number or identifier in the payment medium or payment file generation process.
  
  The generation function is designed to process only certain item types. If an item of a different