How To Fix MU091 - Cannot determine the quantity of the bill of material component &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MU - Maintenance of structured materials

• Message number: 091

• Message text: Cannot determine the quantity of the bill of material component &1

What causes this issue?

You have tried to create a bill of material for a structured article.
The system cannot determine the quantity for the component article &V1&.

System Response

The bill of material for the structured article cannot be created.

How to fix this error?

Make sure that the alternative unit of measures for the component
article, especially unit &V2&, have been entered correctly.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MU091 - Cannot determine the quantity of the bill of material component &1 ?

  The SAP error message MU091, which states "Cannot determine the quantity of the bill of material component &1," typically occurs when there is an issue with the Bill of Materials (BOM) configuration or the way the system is trying to access the BOM data. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Missing BOM: The BOM for the material in question may not exist or may not be properly configured in the system.
  Incorrect Material Master Data: The material master data for the component may be incomplete or incorrect, leading to issues in determining the quantity.
  BOM Status: The BOM might be inactive or not released, preventing the system from accessing it.
  Plant or Version Issues: The BOM may not be available for the specific plant or version being used in the transaction.
  Data Inconsistencies: There may be inconsistencies in the data related to the BOM or the components.
  
  Solutions:
  
  Check BOM Existence: Verify that the BOM for the component exists in the system. You can do this using transaction code CS03 (Display BOM) and entering the relevant material and plant.
  Review Material Master Data: Ensure that the material master data for the component is complete and correctly configured. Use transaction code MM03 (Display Material) to check the details.
  Check BOM Status: Ensure that the BOM is active and released. If it is not, you may need to release it using transaction code CS02 (Change BOM).
  Verify Plant and Version: Make sure that the BOM is valid for the specific plant and version you are working with. You can check this in the BOM details.
  Data Consistency Check: Run a consistency check on the BOM and related data to identify any discrepancies. This can often be done through transaction codes like CS15 (BOM Comparison) or using the SAP standard tools for data consistency checks.
  
  Related Information:
  
  Transaction Codes:
  
  CS03: Display BOM
  CS02: Change BOM
  MM03: Display Material
  CS15: BOM Comparison
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to BOMs and this error message.
  Documentation: Review SAP documentation related to BOM management and troubleshooting for additional insights.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or refer to SAP community forums for further assistance.