How To Fix NAA081 - Conversion of unit &1 to &2 is not possible (material &3)

NAA081 - Overview

• Message type: E = Error

• Message class: NAA - Subsequent settlement (Purchasing)

• Message number: 081

• Message text: Conversion of unit &1 to &2 is not possible (material &3)

What causes this issue?

Conversion of unit &V1& to &V2& failed.

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?

Conversion of units was attempted using all the available information
(such as material master, info record). Unfortunately, no suitable
conversion could be found.
Conversion is carried out on a number of levels that are executed
depending on availability of data (e.g. no material, no conversion via
material master). The levels are:
The data recorded for the document item (gross/net weight, volumes)
The material info record (Purchasing only)
The material master
The general conversion of units of the same dimension
If necessary, see any additional logged messages for the individual
stages of the conversion.
Check whether conversion of units is possible (e.g. via the material
master). If it is, contact your system administrator who can clarify why
the conversion was unsuccessful.

Procedure for System Administrators

The function module called is 'MM_ARRANG_QUANTITY_CONVERSION'. This may
have to be checked, if a known conversion is not used.

Error message extract from SAP system. Copyright SAP SE.

NAA081 - Details

• The SAP error message NAA081 indicates that there is an issue with the conversion of units for a specific material. This typically occurs when you are trying to convert a quantity from one unit of measure (UoM) to another, and the system cannot perform the conversion due to various reasons.
  Causes:
  
  Missing Unit of Measure Conversion: The conversion factor between the two units of measure is not defined in the system.
  Incorrect Configuration: The units of measure may not be correctly configured in the material master or in the unit of measure settings.
  Material Master Issues: The material may not have the necessary data set up for the conversion, such as the base unit of measure or alternative units of measure.
  Incompatible Units: The units of measure being used may not be compatible for conversion (e.g., trying to convert between weight and volume without a defined relationship).
  Data Inconsistencies: There may be inconsistencies or errors in