CP284 - Unit &1 cannot be converted to unit &2 from material master &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 284

• Message text: Unit &1 cannot be converted to unit &2 from material master &3

What causes this issue?

You are attempting to create or change a task list or a master recipe.
The system uses the unit of measure from the material master as a
default at the time of creation.
You copied a task list with unit of measure &V1& or you have changed
the default unit of measure from &V2& to &V1&. However, unit of measure
&V1& cannot be converted to &V2& (the base unit of measure from the
material master).

How to fix this error?

Maintain the conversion for units of measure &V2& and &V1& in the
material master
<ZH>or</>
enter a unit of measure which has already been converted to the base
unit of measure in the material master.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CP284 - Unit &1 cannot be converted to unit &2 from material master &3 ?

  The SAP error message CP284 indicates that there is an issue with unit conversion for a specific material in the material master. This error typically arises when the system is unable to convert a quantity from one unit of measure (UoM) to another due to a missing or incorrect conversion factor.
  Cause:
  
  Missing Conversion Factors: The material master may not have the necessary conversion factors defined between the two units of measure.
  Incorrect Unit of Measure: The units of measure used may not be compatible or may not exist in the system.
  Configuration Issues: There may be issues in the configuration of units of measure in the system.
  Material Master Data Issues: The material master data may be incomplete or incorrectly maintained.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the units of measure section.
  Ensure that the required units of measure are defined and that the conversion factors are correctly maintained.
  
  
  
  Define Conversion Factors:
  
  If the conversion factors are missing, you can define them in the material master. This can be done in the "Basic Data" view under the "Units of Measure" section.
  You can also use transaction code CUNI to maintain unit of measure conversions globally.
  
  
  
  Verify Unit of Measure Configuration:
  
  Check the configuration of units of measure in the system (transaction code OME1) to ensure that the units are correctly defined and linked.
  
  
  
  Check for Compatibility:
  
  Ensure that the units of measure you are trying to convert between are compatible. For example, you cannot convert between units that represent different dimensions (e.g., weight to volume).
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct units or conversion factors, consult the SAP documentation or your organization's material management guidelines.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM03: Display Material Master
  CUNI: Maintain Units of Measure
  OME1: Define Units of Measure
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to unit conversions.
  User Roles: Ensure that you have the necessary authorizations to make changes to the material master data.
  
  By following these steps, you should be able to resolve the CP284 error and ensure that unit conversions for the specified material are functioning correctly.