How To Fix /ACCGO/MCK_MAINT174 - An active BOM already exists for the specified period

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/MCK_MAINT -

• Message number: 174

• Message text: An active BOM already exists for the specified period

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 /ACCGO/MCK_MAINT174 - An active BOM already exists for the specified period ?

  The SAP error message /ACCGO/MCK_MAINT174 indicates that there is an attempt to create or modify a Bill of Materials (BOM) for a period where an active BOM already exists. This typically occurs in the context of managing BOMs in the SAP system, particularly in the area of production planning and materials management.
  Cause:
  
  Existing Active BOM: The primary cause of this error is that there is already an active BOM for the specified material and plant for the period you are trying to create or modify.
  Date Overlap: The dates specified for the new BOM overlap with the dates of an existing BOM, which prevents the system from allowing multiple active BOMs for the same material and plant during the same time frame.
  Incorrect Period Specification: The period you are trying to set for the new BOM may not be correctly defined, leading to conflicts with existing records.
  
  Solution:
  
  
  Check Existing BOMs: 
  
  Use transaction code CS03 (Display BOM) to check if there is an existing BOM for the material and plant in question. Look for the validity dates to see if they overlap with the period you are trying to set.
  
  
  
  Adjust Dates:
  
  If you find an existing BOM that overlaps, you can either:
  
  Change the validity dates of the existing BOM to make room for the new one.
  Delete the existing BOM if it is no longer needed (be cautious with this option as it may affect production).
  Create the new BOM with a different validity period that does not conflict with the existing one.
  
  
  
  
  
  Use Change Mode:
  
  If you are trying to modify an existing BOM, ensure you are in the correct mode (change mode) and that you are not inadvertently trying to create a new BOM.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to BOM management for additional guidance on handling BOMs and understanding the implications of active BOMs.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide more tailored assistance based on your specific configuration and requirements.
  
  
  
  Related Information:
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CS01 (Create BOM)
  CS02 (Change BOM)
  CS03 (Display BOM)
  CS11 (Display BOM for a material)
  
  
  
  BOM Types: Understand the different types of BOMs (e.g., production BOM, sales BOM) and their specific use cases within your organization.
  
  
  SAP Notes: Check for any SAP Notes related to BOM management that may provide additional insights or fixes for known issues.
  
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.