How To Fix MM109 - Conversion to the unit of measure chosen would result in an overflow

MM109 - Overview

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 109

• Message text: Conversion to the unit of measure chosen would result in an overflow

What causes this issue?

For one of the stock quantities, conversion to the unit of measure
chosen would result in a value that cannot be displayed in the stock
list due to its size.

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?

Please choose an alternative unit of measure with a smaller conversion
factor so that the new stock value can still be displayed.

Error message extract from SAP system. Copyright SAP SE.

MM109 - Details

• The SAP error message MM109, which states "Conversion to the unit of measure chosen would result in an overflow," typically occurs in the Materials Management (MM) module when there is an issue with unit conversions during transactions involving quantities. This error can arise in various scenarios, such as during goods movements, inventory management, or when processing purchase orders.
  
  Cause:
  The error is generally caused by one of the following reasons:
  
  
  Large Quantity Values: The quantity being processed exceeds the maximum limit that can be represented in the target unit of measure. For example, if you are trying to convert a very large quantity from one unit of measure to another, the resulting value may exceed the maximum allowable value for that unit.
  
  
  Incorrect Unit of Measure Configuration: There may be an issue with the configuration of units of measure in the material master or the way they are defined in the system. If the