How To Fix CN666 - Select a material component first

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 666

• Message text: Select a material component first

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 CN666 - Select a material component first ?

  The SAP error message CN666 ("Select a material component first") typically occurs in the context of project management or production planning when a user attempts to perform an action that requires a material component to be selected first. This error is often encountered in transactions related to network activities, bill of materials (BOM), or material requirements planning (MRP).
  Cause:
  
  No Material Selected: The most common cause is that the user has not selected a material component before trying to execute a function that requires one.
  Incorrect Transaction Flow: The user may be in a transaction that expects a material component to be selected, but they have not followed the correct steps to do so.
  User Authorization: In some cases, the user may not have the necessary authorizations to view or select material components.
  
  Solution:
  
  Select a Material Component: Ensure that you select a material component before proceeding with the action that triggered the error. This may involve navigating to the appropriate screen or section of the transaction where material components are listed.
  Check Transaction Steps: Review the steps you are following in the transaction. Make sure you are in the correct part of the process where material components can be selected.
  User Authorization: If you suspect that authorization might be an issue, contact your SAP administrator to verify that you have the necessary permissions to access and select material components.
  Consult Documentation: Refer to SAP documentation or help files related to the specific transaction you are using to ensure you are following the correct procedure.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to project management (e.g., CJ20N for Project Builder) or production planning (e.g., MD04 for Stock/Requirements List).
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message CN666.
  User Training: If this error is common among users, consider providing additional training on the relevant SAP modules to ensure users understand how to select material components properly.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who can provide more specific guidance based on your system configuration and business processes.