How To Fix WB2B421 - Sales Order Item Category &1 is not allowed for Sales order type &3

WB2B421 - Overview

• Message type: E = Error

• Message class: WB2B - Trading Contract

• Message number: 421

• Message text: Sales Order Item Category &1 is not allowed for Sales order type &3

What causes this issue?

Sales Order Category &V1& of Trading Contract Category &V2& is not a
valid entry for creating a Sales Order Item. The Item Category &V1& is
not maintained within the Sales Order Item Category Customizing.

System Response

The system does not allow further processing of this item &V4&

How to fix this error?

Check your entry.
Choose another entry or maintain the Sales Order Item category so that
the value is allowed within the Sales Order entry process.

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 WB2B421 - Sales Order Item Category &1 is not allowed for Sales order type &3 ?

  The SAP error message WB2B421 indicates that there is a mismatch between the sales order item category and the sales order type in your SAP system. This error typically occurs when you are trying to create or process a sales order, and the item category you are using is not permitted for the specified sales order type.
  
  Cause:
  
  
  Configuration Issues: The item category is not configured to be used with the specified sales order type in the system.
  Incorrect Item Category: The item category being used may not be appropriate for the type of sales order you are trying to create (e.g., standard order, return order, etc.).
  Master Data Issues: The material master or customer master data may not be set up correctly, leading to the use of an inappropriate item category.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings in SAP (Transaction code: SPRO).
  Navigate to Sales and Distribution > Sales > Sales Document > Sales Document