How To Fix CM300 - Select operation first

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 300

• Message text: Select operation 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM300 - Select operation first ?

  The SAP error message CM300 "Select operation first" typically occurs in the context of production planning or order management within the SAP system. This error indicates that the user is trying to perform an action that requires a specific operation to be selected first, but no operation has been selected.
  Cause:
  
  No Operation Selected: The most common cause of this error is that the user has not selected any operation in the routing or production order before attempting to execute an action (like confirming, changing, or displaying details).
  Incorrect Navigation: The user may have navigated to a screen or function that requires an operation to be selected but did not do so.
  User Interface Issues: Sometimes, the user interface may not clearly indicate that an operation needs to be selected, leading to confusion.
  
  Solution:
  
  Select an Operation: Before performing the action that triggered the error, ensure that you have selected the appropriate operation from the list. This can usually be done by clicking on the operation in the routing or order screen.
  Check for Filters: If you are using filters or search criteria, ensure that they are set correctly so that the desired operations are visible and selectable.
  Review User Permissions: In some cases, user permissions may restrict access to certain operations. Ensure that you have the necessary permissions to select and work with the operations.
  Consult Documentation: If you are unsure about the steps to select an operation, refer to the SAP documentation or user manuals specific to your module (e.g., PP for Production Planning).
  Contact Support: If the issue persists after trying the above solutions, consider reaching out to your SAP support team or system administrator for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), or CO15 (Confirm Production Order) where this error might occur.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Training: If you frequently encounter this error, consider additional training on the specific SAP module you are using to better understand the workflow and operations.
  
  By following these steps, you should be able to resolve the CM300 error and proceed with your tasks in SAP.