How To Fix MA022 - Not possible to convert from & to & - & will be set

MA022 - Overview

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 022

• Message text: Not possible to convert from & to & - & will be set

What causes this issue?

There are two possible causes for this error:
You have tried to change one of the units of a characteristic value in
the planning hierarchy.
You have tried to overwrite one of the planning units in the planning
table.

System Response

Conversion between the two units is not possible.

How to fix this error?

RESET N1
If the conversion is between currency units, have your systems
administrator check and, if necessary, change:
the exchange rate type which has been defined in Customizing for Sales
& Operations Planning (the step "Set parameters for info structures and
key figure")
the configuration of currencies in Customizing (under "Global
settings")
If the conversion is between units of measure, ensure that conversion
is possible:
RESET N2
either via the internally maintained SI conversion table (e.g. 1 tonne
= 1000 kg)
or, if you are planning a material or a product group at the detailed
level, via a conversion factor defined in the material master record
(if necessary, maintain the unit in which you want to plan the material
as an alternative unit of measure in the material master record)

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

<ZH>Note</>
It is not possible to define conversion factors in the planning table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MA022 - Not possible to convert from & to & - & will be set ?

  The SAP error message MA022 typically indicates that there is an issue with the conversion of a material or quantity from one unit of measure to another. This error often arises in the context of material management and inventory processes, particularly when dealing with different units of measure for materials.
  
  Cause:
  The error message "Not possible to convert from & to & - & will be set" usually occurs due to one of the following reasons:
  
  
  Unit of Measure Configuration: The units of measure (UoM) for the material are not properly defined in the system. This can happen if the conversion factors between the base unit and the alternative unit are missing or incorrect.
  
  
  Missing Conversion Factors: If the conversion factors between the units of measure are not maintained in the material master data, SAP will not be able to perform the conversion.
  
  
  Inconsistent Data: There may be inconsistencies in the data related to the