How To Fix WW106 - A base unit of measure must be entered for reference material &

SAP Error Message - Details

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 106

• Message text: A base unit of measure must be entered for reference material &

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 WW106 - A base unit of measure must be entered for reference material & ?

  The SAP error message WW106 indicates that a base unit of measure must be specified for a reference material. This error typically occurs when you are trying to create or modify a material master record in SAP, and the system requires a base unit of measure to be defined for the material.
  Cause:
  
  Missing Base Unit of Measure: The most common cause of this error is that the base unit of measure field is left blank when creating or updating a material master record.
  Incorrect Material Type: Certain material types may require specific fields to be filled out, including the base unit of measure.
  Configuration Issues: There may be configuration settings in the material master that require a base unit of measure for certain types of materials.
  
  Solution:
  
  
  Enter Base Unit of Measure:
  
  Go to the material master record (transaction code MM01 for creation or MM02 for modification).
  Navigate to the relevant views (usually Basic Data 1 or Basic Data 2).
  Ensure that the "Base Unit of Measure" field is filled in with a valid unit of measure (e.g., EA for each, KG for kilograms, etc.).
  Save the changes.
  
  
  
  Check Material Type Settings:
  
  If you are unsure about the required fields for a specific material type, consult with your SAP configuration team or refer to the material type settings in the customizing (transaction code SPRO).
  
  
  
  Review User Authorizations:
  
  Ensure that you have the necessary authorizations to create or modify material master records.
  
  
  
  Consult Documentation:
  
  If you are still facing issues, refer to SAP documentation or help resources for more detailed guidance on material master data management.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  
  
  Unit of Measure (UoM): The base unit of measure is the primary unit in which the material is managed in the system. It is crucial for inventory management, purchasing, and sales processes.
  Material Master Views: The base unit of measure is typically defined in the Basic Data view of the material master. Other views may also have specific requirements based on the material type and industry.
  
  If you continue to experience issues after following these steps, it may be beneficial to reach out to your SAP support team for further assistance.