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

SAP Error Message - Details

• 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 material, such as incorrect settings in the material master or issues with the related master data.
  
  
  Transaction Context: The error may also occur in specific transactions where the system expects a certain unit of measure but receives a different one.
  
  
  Solution:
  To resolve the MA022 error, you can take the following steps:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03).
  Check the "Basic Data" and "Purchasing" views for the material in question.
  Ensure that the units of measure are correctly defined and that conversion factors are maintained.
  
  
  
  Maintain Unit of Measure Conversion:
  
  If the conversion factors are missing, you can maintain them by going to the "Units of Measure" section in the material master.
  Use transaction code MM02 to edit the material master and add the necessary conversion factors.
  
  
  
  Review Transaction Settings:
  
  Ensure that the transaction you are performing is compatible with the units of measure being used.
  If you are entering quantities in a different unit of measure, make sure that the system can handle that conversion.
  
  
  
  Check for Customizations:
  
  If your organization has custom developments or enhancements, check if they might be affecting the unit of measure conversions.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for any specific notes related to the error message MA022.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  MM03 - Display Material Master
  MM02 - Change Material Master
  MM01 - Create Material Master
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  
  Unit of Measure Settings: Familiarize yourself with the settings for units of measure in SAP, including how to define and maintain them in the system.
  
  
  By following these steps, you should be able to identify and resolve the cause of the MA022 error in SAP.