How To Fix MPN01004 - You have not selected a part

SAP Error Message - Details

• Message type: E = Error

• Message class: MPN01 - MPN Message: Material Master / customizing

• Message number: 004

• Message text: You have not selected a part

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 MPN01004 - You have not selected a part ?

  The SAP error message MPN01004, which states "You have not selected a part," typically occurs in the context of Material Management (MM) or Production Planning (PP) modules when a user attempts to perform an action that requires a specific part or material to be selected, but none has been chosen.
  Cause:
  
  No Material Selected: The most common cause is that the user has not selected a material or part in the relevant transaction or screen.
  Incorrect Transaction: The user may be in a transaction that requires a material selection, but they are either in the wrong transaction or have not navigated to the correct screen.
  User Input Error: The user may have overlooked selecting a part due to oversight or misunderstanding of the process.
  Configuration Issues: In some cases, there may be configuration settings in the system that are causing the error to appear even when a part is expected to be selected.
  
  Solution:
  
  Select a Material: Ensure that you have selected a material or part in the relevant field before proceeding. Look for dropdowns or selection lists that allow you to choose the appropriate part.
  Check Transaction Steps: Review the steps you are taking in the transaction. Make sure you are following the correct procedure and that you are in the right screen where material selection is required.
  Input Validation: If you are entering a material number manually, double-check that it is correct and exists in the system.
  Consult Documentation: Refer to the SAP documentation or user manuals for the specific transaction you are using to ensure you are following the correct process.
  Contact Support: If the issue persists after verifying your selections and following the correct procedures, consider reaching out to your SAP support team or system administrator for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the transaction codes related to the process you are working on (e.g., ME21N for creating purchase orders, CO01 for creating production orders).
  User Roles and Permissions: Ensure that your user role has the necessary permissions to access and select materials in the system.
  Training Resources: If you are new to SAP, consider seeking training resources or sessions that cover the specific modules you are working with to better understand the processes and avoid similar errors in the future.
  
  By following these steps, you should be able to resolve the MPN01004 error and proceed with your tasks in SAP.