How To Fix LK031 - Specify a unit of measure for the counted quantity

SAP Error Message - Details

• Message type: E = Error

• Message class: LK - WM -> SUB connection messages

• Message number: 031

• Message text: Specify a unit of measure for the counted quantity

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 LK031 - Specify a unit of measure for the counted quantity ?

  The SAP error message LK031, which states "Specify a unit of measure for the counted quantity," typically occurs during inventory counting processes in SAP, particularly when using the Inventory Management (IM) module. This error indicates that the system requires a unit of measure (UoM) to be specified for the counted quantity, but it has not been provided.
  Cause:
  
  Missing Unit of Measure: The most common cause of this error is that the user has not entered a unit of measure for the counted quantity in the inventory document.
  Incorrect Configuration: The material master data may not be properly configured to include the necessary units of measure.
  Data Entry Error: The user may have overlooked entering the unit of measure while performing the count.
  
  Solution:
  To resolve the LK031 error, you can take the following steps:
  
  
  Enter Unit of Measure:
  
  When you are entering the counted quantity in the inventory document, ensure that you also specify the unit of measure. This can usually be done in the same screen where you enter the counted quantity.
  
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the units of measure defined for the material. Ensure that the base unit of measure and any alternative units of measure are correctly set up.
  
  
  
  Review Inventory Document:
  
  If you are using a physical inventory document, ensure that the document is correctly set up and that all required fields, including the unit of measure, are filled out.
  
  
  
  User Training:
  
  If this error is frequently encountered, consider providing additional training to users on how to properly enter inventory counts, including the importance of specifying the unit of measure.
  
  
  
  System Configuration:
  
  If the issue persists, it may be necessary to review the system configuration related to inventory management and units of measure. This may require assistance from an SAP consultant or your IT department.
  
  
  
  Related Information:
  
  Transaction Codes: Common transaction codes related to inventory management include:
  
  MI01: Create Physical Inventory Document
  MI04: Enter Inventory Count
  MI07: Post Inventory Count
  
  
  Material Master Views: The material master has several views, including Basic Data, Purchasing, and Sales, where units of measure can be defined.
  SAP Help Documentation: Refer to SAP's official documentation for detailed information on inventory management and handling units of measure.
  
  By following these steps, you should be able to resolve the LK031 error and successfully complete your inventory counting process in SAP.