How To Fix /SAPAPO/MAT239 - Select the "Main GTIN/EAN" checkbox for at least one entry of UoM &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MAT -

• Message number: 239

• Message text: Select the "Main GTIN/EAN" checkbox for at least one entry of UoM &1

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 /SAPAPO/MAT239 - Select the "Main GTIN/EAN" checkbox for at least one entry of UoM &1 ?

  The SAP error message /SAPAPO/MAT239 indicates that when working with a material in the Advanced Planning and Optimization (APO) module, you need to select the "Main GTIN/EAN" checkbox for at least one entry of the Unit of Measure (UoM) specified in the error message.
  Cause:
  This error typically occurs when you are trying to create or modify a material master record in SAP APO, and the system requires that at least one unit of measure (UoM) has a designated "Main GTIN/EAN" (Global Trade Item Number/European Article Number). The GTIN/EAN is essential for identifying products in a standardized way, especially for logistics and sales processes.
  Solution:
  To resolve this error, follow these steps:
  
  
  Access the Material Master: Go to the transaction code for maintaining the material master (e.g., MM02 for changing or MM01 for creating).
  
  
  Select the Appropriate Views: Ensure you are in the appropriate views that include the UoM and GTIN/EAN information.
  
  
  Check UoM Settings: Look for the UoM section in the material master. You should see a list of UoMs associated with the material.
  
  
  Select the Main GTIN/EAN Checkbox:
  
  Identify the UoM that you want to designate as the main UoM.
  Check the "Main GTIN/EAN" checkbox for that UoM. This indicates that this UoM is the primary one for GTIN/EAN purposes.
  
  
  
  Save Changes: After making the necessary changes, save the material master record.
  
  
  Related Information:
  
  GTIN/EAN: These are standardized identifiers for products, which are crucial for inventory management, sales, and logistics. They help in tracking products across different systems and organizations.
  Unit of Measure (UoM): This defines how a product is measured (e.g., pieces, boxes, kilograms). Each UoM can have its own GTIN/EAN.
  Material Master Data: This is a critical component in SAP that contains all the information related to a product, including its specifications, UoMs, and associated GTINs/EANs.
  
  If you continue to experience issues after following these steps, it may be helpful to consult with your SAP administrator or support team for further assistance.