How To Fix MW756 - Item &1: item category &2 is not allowed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 756

• Message text: Item &1: item category &2 is not allowed

What causes this issue?

You want to change allocation table item &V1& using the generation
modules in stock planning, or generate it from the prepack planning,
and for this you use item category &V2&. You can group several
allocation table items together into one purchase order item for this
item category.
No item categories are allowed, which allow allocation table items to
be grouped together into one purchase order item when generating
allocation tables from the prepack planning.
No item categories are allowed, which allow allocation table items to
be grouped together into one purchase order item when changing an
allocation table item using generation modules in the allocation table.

System Response

The allocation table item will not be copied or changed.

How to fix this error?

Use another item category.

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 MW756 - Item &1: item category &2 is not allowed ?

  The SAP error message MW756 indicates that there is an issue with the item category in a material document or sales order. Specifically, it states that the item category specified for the item is not allowed for the operation you are trying to perform. This can occur in various contexts, such as during goods movements, sales order processing, or inventory management.
  Cause:
  The error can be caused by several factors, including:
  
  Incorrect Item Category: The item category assigned to the material may not be valid for the transaction type you are trying to execute.
  Configuration Issues: The item category may not be configured correctly in the system, or it may not be allowed for the specific document type or movement type.
  Material Master Settings: The material master record may not be set up correctly, leading to the use of an inappropriate item category.
  Transaction Type Restrictions: Certain item categories are restricted for specific transaction types, and using them inappropriately can trigger this error.
  
  Solution:
  To resolve the MW756 error, you can take the following steps:
  
  
  Check Item Category: Verify the item category assigned to the item in the material document or sales order. Ensure that it is appropriate for the transaction you are trying to perform.
  
  
  Review Configuration:
  
  Go to the configuration settings in SAP (transaction code SPRO) and check the settings for item categories under the relevant module (e.g., Sales and Distribution, Materials Management).
  Ensure that the item category is allowed for the specific document type or movement type you are working with.
  
  
  
  Material Master Review: 
  
  Check the material master record (transaction code MM03) for the item in question. Ensure that the item category is correctly assigned and that all relevant views (e.g., Sales, Purchasing, Accounting) are properly maintained.
  
  
  
  Consult Documentation: Review SAP documentation or consult with your SAP support team to understand the specific restrictions related to the item category and the transaction type.
  
  
  Testing: After making any changes, test the transaction again to see if the error persists.
  
  
  Related Information:
  
  Transaction Codes: 
  
  MM03: Display Material
  SPRO: Customizing Implementation Guide
  VA01/VA02: Create/Change Sales Order
  MIGO: Goods Movement
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message MW756.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to perform the transaction with the specified item category.
  
  If the issue persists after following these steps, it may be beneficial to engage with your SAP support team or consult with an SAP expert for further assistance.