How To Fix WN088 - Material group with intial value not allowed! Material group '&' is used

WN088 - Overview

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 088

• Message text: Material group with intial value not allowed! Material group '&' is used

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WN088 - Material group with intial value not allowed! Material group '&' is used ?

  The SAP error message WN088 indicates that there is an issue with the material group assigned to a material in the system. Specifically, the error states that the material group has an initial value that is not allowed, and it is being used in a transaction or process.
  
  Cause:
  
  Invalid Material Group: The material group specified in the error message ('&') is either not defined in the system or is set to an initial value that is not permitted.
  
  Configuration Issues: The material group may have been configured incorrectly in the system settings, leading to restrictions on its use.
  Data Entry Error: There may have been a mistake in data entry where an invalid or unassigned material group was selected for a material.
  Authorization Issues: The user may not have the necessary permissions to use the specified material group.
  
  
  Solution:
  
  
  Check Material Group Configuration:
  
  Go to the transaction code OMD1 (or SPRO for configuration) to check the configuration