How To Fix WP407 - Unit of measure & cannot be converted

WP407 - Overview

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 407

• Message text: Unit of measure & cannot be converted

What causes this issue?

The conversion rule for unit of measure &V1& is unknown.

System Response

The relevant record cannot be prepared in POS - interface outbound
processing. The relevant document cannot be posted in the SAP system in
POS - interface inbound processing.

How to fix this error?

<DS:SIMG.W_DF_VK_0123.SIMG_OPOS>Define a conversion rule for the unit
of measure</>.

Error message extract from SAP system. Copyright SAP SE.

WP407 - Details

• The SAP error message WP407: Unit of measure & cannot be converted typically occurs when the system tries to convert a quantity from one unit of measure (UoM) to another, but the conversion factor or relationship between these units is not defined or is invalid.
  
  
  Cause:
  
  The system attempts to convert a quantity from one unit of measure to another (e.g., from EA - Each to KG - Kilogram).
  No valid conversion factor exists between the two units in the material master or in the unit of measure conversion tables.
  The units involved are incompatible or the conversion is not maintained in the system.
  Sometimes, the error can also occur if the unit of measure is not defined in the system or is incorrectly maintained.
  
  
  
  Solution:
  
  
  Check Unit of Measure Conversion:
  
  Go to the material master (transaction MM02).
  Navigate to the Additional Data tab and then to Units of Measure.
  Verify if the conversion between the base unit of measure