How To Fix MA501 - Not possible to convert from & to & -> F1

MA501 - Overview

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 501

• Message text: Not possible to convert from & to & -> F1

What causes this issue?

The base unit of measure of the information structure is different than
the base unit of measure of the material(s), but no conversion factor
has been defined.

System Response

No units of measure conversion is possible for the material(s) whose
SOP data you have tried to transfer to Demand Management.

How to fix this error?

Have your systems administrator check the configuration of the
information structure's base unit of measure in Customizing for Sales &
Operations Planning (the step "Set parameters for info structures and
key figures").
Maintain the material master record(s) such that the information
structure's base unit is defined as an alternative unit of measure with
the necessary conversion factor.

Error message extract from SAP system. Copyright SAP SE.

MA501 - Details

• The SAP error message MA501 ("Not possible to convert from & to &") typically occurs in the context of material management or inventory management when there is an issue with unit of measure (UoM) conversions. This error indicates that the system is unable to convert a quantity from one unit of measure to another due to a configuration or data issue.
  Causes:
  
  Missing Conversion Factors: The conversion factors between the two units of measure may not be defined in the system.
  Incorrect Unit of Measure: The units of measure being used may not be compatible or may not exist in the system.
  
  Configuration Issues: There may be issues in the configuration of the material master data, particularly in the units of measure section.
  Data Inconsistencies: There could be inconsistencies in the data related to the material or its units of measure.
  
  Solutions:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the