How To Fix /SCMB/MC_PB_DEF186 - No conversion defined for NLQ UoM '&1' in alternative UoM of material &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/MC_PB_DEF -

• Message number: 186

• Message text: No conversion defined for NLQ UoM '&1' in alternative UoM of material &2

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 /SCMB/MC_PB_DEF186 - No conversion defined for NLQ UoM '&1' in alternative UoM of material &2 ?

  The SAP error message /SCMB/MC_PB_DEF186 indicates that there is no conversion defined for a specific unit of measure (UoM) in the alternative unit of measure for a material. This typically occurs in the context of SAP Supply Chain Management (SCM) or Advanced Planning and Optimization (APO) when dealing with materials that have multiple units of measure.
  Cause:
  
  Missing Conversion Factors: The primary cause of this error is that the conversion factor between the specified unit of measure (NLQ UoM) and the alternative unit of measure for the material is not defined in the system.
  Incorrect UoM Configuration: The UoM settings for the material may not be correctly configured, leading to discrepancies in how the system interprets the units.
  Material Master Data Issues: The material master data may be incomplete or incorrectly maintained, particularly in the UoM section.
  
  Solution:
  
  
  Define Conversion Factors:
  
  Go to the material master record for the affected material (transaction code MM02).
  Navigate to the "Units of Measure" view.
  Check if the conversion factor for the NLQ UoM is defined. If not, add the necessary conversion factors between the base UoM and the alternative UoM.
  
  
  
  Check UoM Configuration:
  
  Ensure that the UoM is correctly configured in the system. You can check this in the UoM settings (transaction code CUNI).
  Verify that the UoM is active and properly linked to the material.
  
  
  
  Review Material Master Data:
  
  Ensure that all relevant fields in the material master are filled out correctly, especially those related to UoM.
  If necessary, consult with your SAP master data team to ensure that the material master is correctly maintained.
  
  
  
  Testing:
  
  After making the necessary changes, test the transaction again to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM02: Change Material Master
  CUNI: Maintain Units of Measure
  
  
  Documentation: Refer to SAP Help documentation for detailed information on managing units of measure and material master data.
  User Exits and BAdIs: If the issue is related to custom developments, check for any user exits or BAdIs that might affect UoM conversions.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in SCM or material management.