How To Fix WW657 - No change possible due to existing mat. valuations or char. restrictions

WW657 - Overview

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 657

• Message text: No change possible due to existing mat. valuations or char. restrictions

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 WW657 - No change possible due to existing mat. valuations or char. restrictions ?

  The SAP error message WW657 ("No change possible due to existing material valuations or characteristic restrictions") typically occurs when you attempt to make changes to a material master record that is restricted due to existing valuations or characteristics. This can happen in various scenarios, such as when trying to change the material type, valuation class, or other key attributes of a material that has already been used in transactions.
  Causes:
  
  Existing Transactions: The material has been involved in transactions (e.g., goods movements, sales orders) that have created valuations or characteristics that cannot be changed.
  Valuation Restrictions: The material is assigned to a valuation area or has a valuation class that restricts changes.
  Characteristic Restrictions: If the material is part of a classification system, certain characteristics may be locked due to existing values.
  Material Type Restrictions: Some material types have specific restrictions on what can be changed after the material has been created.
  
  Solutions:
  
  Check Material Usage: Review