How To Fix BM018 - Specify at least 1 unit

SAP Error Message - Details

• Message type: E = Error

• Message class: BM - Development class BZME - units of measure

• Message number: 018

• Message text: Specify at least 1 unit

What causes this issue?

No unit was included. Conversion or determination of conversion factors
is therefore not possible.

System Response

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

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BM018 - Specify at least 1 unit ?

  The SAP error message BM018 ("Specify at least 1 unit") typically occurs in the context of material management or inventory management when a user attempts to perform an action that requires specifying a unit of measure, but none has been provided. This can happen in various transactions, such as creating or updating material master records, purchase orders, or inventory counts.
  Cause:
  
  Missing Unit of Measure: The most common cause is that the user has not specified a unit of measure in the relevant field.
  Incorrect Configuration: The system may be configured in a way that requires a unit of measure for certain transactions, and this requirement is not being met.
  Data Entry Error: The user may have overlooked the unit of measure field or entered an invalid value.
  
  Solution:
  
  Specify a Unit of Measure: Ensure that you enter a valid unit of measure in the required field. This could be a standard unit like "EA" (each), "KG" (kilogram), "L" (liter), etc.
  Check Configuration: If you are an administrator or have access to configuration settings, check the settings for the relevant transaction or material type to ensure that the unit of measure is correctly defined and required.
  Review Material Master Data: If the error occurs while working with material master data, ensure that the unit of measure is defined in the material master record. You can do this by navigating to the material master transaction (MM01 or MM02) and checking the "Units of Measure" tab.
  Consult Documentation: If you are unsure about the required units of measure for a specific transaction, refer to SAP documentation or consult with your SAP support team.
  
  Related Information:
  
  
  Transaction Codes: Common transaction codes where this error might occur include:
  
  MM01 (Create Material)
  MM02 (Change Material)
  ME21N (Create Purchase Order)
  MIGO (Goods Movement)
  
  
  
  Unit of Measure Configuration: Units of measure can be configured in the SAP system under the following path:
  
  SPRO > Logistics General > Material Master > Basic Settings > Define Units of Measure
  
  
  
  User Training: Ensure that users are trained on the importance of specifying units of measure in relevant transactions to avoid this error in the future.
  
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues related to this error message.