How To Fix MPE_CM_BOM021 - Parent Part Type cannot be empty

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_CM_BOM - Message Class for Parameter Effectivity

• Message number: 021

• Message text: Parent Part Type cannot be empty

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 MPE_CM_BOM021 - Parent Part Type cannot be empty ?

  The SAP error message MPE_CM_BOM021, which states "Parent Part Type cannot be empty," typically occurs in the context of Bill of Materials (BOM) management or when dealing with material master data. This error indicates that the system expects a value for the "Parent Part Type" field, but it is currently empty.
  Cause:
  
  Missing Data: The most common cause of this error is that the "Parent Part Type" field has not been filled in when creating or modifying a BOM or material.
  Configuration Issues: There may be issues with the configuration of the material types or BOM settings in the system.
  User Input Error: The user may have overlooked entering the required information in the relevant fields.
  
  Solution:
  
  Check Input Fields: Ensure that the "Parent Part Type" field is filled in correctly. This may involve going back to the transaction where the error occurred and entering the necessary information.
  Review BOM Configuration: If you are working with BOMs, check the configuration settings for BOM types and ensure that the parent part type is defined correctly in the system.
  Material Master Data: Verify that the material master data for the parent part is complete and correctly configured. This includes checking the material type and ensuring that all required fields are populated.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the BOM or material master processes relevant to your version of SAP.
  Contact Support: If the issue persists after checking the above, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), and CS03 (Display BOM) to manage BOMs effectively.
  Material Types: Understand the different material types in SAP and their implications for BOMs and parent-child relationships.
  SAP Notes: Check for any SAP Notes related to BOM management or the specific error message for additional insights or patches that may resolve the issue.
  
  By addressing the missing data and ensuring proper configuration, you should be able to resolve the MPE_CM_BOM021 error effectively.