How To Fix W5160 - Quantity conversion from &3 to &4 for material &1 from res. &2 failed

W5160 - Overview

• Message type: E = Error

• Message class: W5 - Messages for MM-WEB Applications and BAPIs

• Message number: 160

• Message text: Quantity conversion from &3 to &4 for material &1 from res. &2 failed

What causes this issue?

Quantity conversion from &V3& to &V4& for material &V1& from reservation
&V2& has 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?

Check the reservation that was transferred to the BAPI, and whether the
material master record for the material affected contains the correctly
maintained conversion factors for alternative units of measure.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W5160 - Quantity conversion from &3 to &4 for material &1 from res. &2 failed ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W5160 Quantity conversion from &3 to &4 for material &1 from res. &2 failed
  
  Meaning / 
  Cause:
  This warning message indicates that SAP attempted to convert a quantity from one unit of measure (UoM) to another for a specific material in a particular reservation (or resource), but the conversion failed. The placeholders represent:
  
  &1 = Material number  
  &2 = Reservation or resource number  
  &3 = Original unit of measure  
  &4 = Target unit of measure  
  
  The failure usually occurs because the system does not have the necessary conversion factor defined between the two units of measure for the material in question.
  
  Common Causes:
  
  Missing or incorrect unit of measure conversion factors in the material master data.  
  The units of measure involved are not compatible or not maintained in the system.  
  The material master does not have the alternative