How To Fix MW339 - &1 &2: item category (&3) not allowed. &4

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 339

• Message text: &1 &2: item category (&3) not allowed. &4

What causes this issue?

Item category &V3& is not allowed for item &V2&. The item has been
created referencing another document. This means that the item
categories possible are limited.
When an item is created referencing a shipping notification, an item
category must be selected that only allows goods to be moved between
distribution centers and stores (that is, generation of warehouse
orders and deliveries as follow-on documents), and does not allow
purchase orders to be generated for external vendors.

System Response

The system does not include reference document items in the allocation
table if:
a promotion number is maintained in the reference document item
the reference document item contains a material that is a variant
referencing a generic material (higher-level item)
Otherwise the reference document item is adopted in the allocation
table. The item category can be changed in the allocation table.

How to fix this error?

Select a valid item category.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW339 - &1 &2: item category (&3) not allowed. &4 ?

  The SAP error message MW339 indicates that there is an issue with the item category in a transaction, typically related to materials management (MM) or sales and distribution (SD) processes. The message format is as follows:
  MW339 &1 &2: item category (&3) not allowed. &4
  Cause:
  The error occurs when the system encounters an item category that is not permitted for the specific transaction or document type you are trying to process. This can happen due to several reasons, including:
  
  Configuration Issues: The item category may not be configured correctly in the system for the specific document type or transaction.
  Document Type Restrictions: Certain document types may have restrictions on which item categories can be used.
  Material Master Settings: The material master record may not be set up to allow the specified item category.
  Sales Document Configuration: In the case of sales documents, the item category may not be allowed for the sales area or sales organization.
  
  Solution:
  To resolve the MW339 error, you can take the following steps:
  
  
  Check Item Category Configuration:
  
  Go to the configuration settings for item categories in the relevant module (MM or SD).
  Ensure that the item category you are trying to use is allowed for the document type you are working with.
  
  
  
  Review Document Type Settings:
  
  Check the settings for the document type in the configuration to see if the item category is permitted.
  You can do this in the SPRO transaction under the relevant module (e.g., Sales and Distribution or Materials Management).
  
  
  
  Verify Material Master Data:
  
  Check the material master record for the item in question to ensure that it is set up correctly.
  Ensure that the item category is compatible with the material type and other settings.
  
  
  
  Consult with Functional Team:
  
  If you are unsure about the configuration or settings, consult with your SAP functional team or a consultant who specializes in the relevant module.
  
  
  
  Testing:
  
  After making any changes, test the transaction again to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MM02 (Change Material), VA01 (Create Sales Order), or ME21N (Create Purchase Order) depending on the context of the error.
  SAP Notes: Check SAP Notes for any known issues or patches related to the MW339 error.
  Documentation: Refer to SAP Help documentation for detailed information on item categories and their configurations.
  
  By following these steps, you should be able to identify the cause of the MW339 error and implement a solution to resolve it.