How To Fix MW757 - Item &1: notification category &2 is not allowed. &3 &4

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 757

• Message text: Item &1: notification category &2 is not allowed. &3 &4

What causes this issue?

You want to change allocation table item &V1& using generation modules
in stock planning, or you want to generate it from the prepack
planning, and for this you use notification category &V2&. A
confirmation on the requested quantities is allowed for this
notification category.
No notification categories that allow a confirmation of the requested
quantities for plants are allowed when allocation tables are generated
from the prepack planning.
No notification categories are allowed that allow a confirmation of the
requested quantities for plants when changes are being made to an
allocation table item using generation modules in stock planning.

System Response

The allocation table item will not be copied or changed.

How to fix this error?

Use a different notification 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 MW757 - Item &1: notification category &2 is not allowed. &3 &4 ?

  The SAP error message MW757 indicates that there is an issue with the notification category assigned to a specific item in the system. This error typically arises in the context of materials management or inventory management processes, particularly when dealing with notifications related to materials or inventory items.
  Cause:
  The error message "MW757 Item &1: notification category &2 is not allowed. &3 &4" can occur due to several reasons:
  
  Invalid Notification Category: The notification category specified for the item is not valid or not allowed for the particular item type or material.
  Configuration Issues: The system configuration may not allow the specified notification category for the item in question. This could be due to settings in the material master or the notification type configuration.
  Missing Authorizations: The user may not have the necessary authorizations to create or modify notifications for the specified category.
  Data Inconsistencies: There may be inconsistencies in the data related to the item or notification category, such as missing or incorrect entries in the relevant tables.
  
  Solution:
  To resolve the MW757 error, you can take the following steps:
  
  
  Check Notification Category: Verify that the notification category you are trying to use is valid for the item. You can do this by checking the configuration settings in the SAP system.
  
  
  Review Configuration: Go to the configuration settings for notifications (transaction code SPRO) and ensure that the notification category is correctly defined and allowed for the item type you are working with.
  
  
  Material Master Data: Check the material master data for the item in question. Ensure that all relevant fields are correctly filled out and that the notification category is appropriate for the material type.
  
  
  User Authorizations: Ensure that the user has the necessary authorizations to create or modify notifications for the specified category. You may need to consult with your SAP security team to verify this.
  
  
  Consult Documentation: Review SAP documentation or help resources for any specific notes or guidelines related to the notification categories and their allowed configurations.
  
  
  Testing: After making any changes, test the process again to see if the error persists.
  
  
  Related Information:
  
  Transaction Codes: You may find it helpful to use transaction codes such as MM01 (Create Material), MM02 (Change Material), or IW21 (Create Notification) to check and modify the relevant data.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error message number (MW757) in the SAP Support Portal.
  Community Forums: Consider visiting SAP community forums or discussion boards where other users may have encountered similar issues and shared their solutions.
  
  By following these steps, you should be able to identify the cause of the MW757 error and implement a solution to resolve it.