How To Fix 30018 - Please maintain unit of measure in line &

30018 - Overview

• Message type: E = Error

• Message class: 30 - Service Master: Basic Data

• Message number: 018

• Message text: Please maintain unit of measure in line &

What causes this issue?

To be able to enter a master record with its basic data in the
specified line, you have to enter a unit of measure for the master
record.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 30018 - Please maintain unit of measure in line & ?

  The SAP error message 30018, "Please maintain unit of measure in line &," typically occurs when a unit of measure (UoM) is not specified for a line item in a transaction, such as a purchase order, sales order, or material document. This error can prevent the completion of the transaction.
  
  Cause:
  
  Missing Unit of Measure: The most common cause is that the unit of measure field is left blank for one or more line items in the document.
  Incorrect Configuration: The material master may not have a defined unit of measure for the specific material being processed.
  Data Entry Error: Users may inadvertently skip entering the unit of measure during data entry.
  
  
  Solution:
  
  
  Check Line Item: Go to the line item that triggered the error and ensure that the unit of measure is filled in. You can do this by:
  
  Opening the relevant document (e.g., purchase order, sales order).
  Navigating to the line item in question.
  Entering the appropriate