How To Fix MILL038 - Selection using different class types is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL - Messages in IS Mill Products

• Message number: 038

• Message text: Selection using different class types is not possible

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MILL038 - Selection using different class types is not possible ?

  The SAP error message MILL038 ("Selection using different class types is not possible") typically occurs in the context of the SAP system when there is an attempt to select or process data using different class types that are not compatible with each other. This can happen in various scenarios, such as when working with classification data, material master records, or during the execution of certain transactions.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Incompatible Class Types: The selection criteria involve different class types that cannot be processed together. For example, if you are trying to select materials from different classes (e.g., material class and equipment class) that are not designed to be used together.
  Incorrect Configuration: The configuration of the classification system may not be set up correctly, leading to conflicts when trying to access or manipulate data.
  Data Integrity Issues: There may be issues with the data itself, such as missing or incorrect class assignments for materials or objects.
  
  Solution:
  To resolve the MILL038 error, you can take the following steps:
  
  
  Check Class Types: Review the class types you are trying to use in your selection. Ensure that they are compatible and that you are not mixing different types that cannot be processed together.
  
  
  Review Selection Criteria: If you are using a selection screen or a report, double-check the selection criteria you have entered. Make sure that you are not inadvertently including different class types.
  
  
  Configuration Review: If you have access to the configuration settings, check the classification settings in the SAP system. Ensure that the class types are correctly defined and that they can be used together if needed.
  
  
  Data Validation: Validate the data in the system to ensure that all materials or objects have the correct class assignments. You can use transaction codes like CL02 (Change Class) or CL03 (Display Class) to check the class assignments.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the classification system and how to manage class types.
  
  
  Seek Help from SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), CL03 (Display Class), and CL24 (Class Overview).
  SAP Notes: Check for any SAP Notes related to the MILL038 error for additional insights or patches that may address the issue.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the MILL038 error and implement a suitable solution.