How To Fix W6006 - No conversion factor maintained for material &, unit of measure &

SAP Error Message - Details

• Message type: E = Error

• Message class: W6 - Messages for Empties Stock Overview

• Message number: 006

• Message text: No conversion factor maintained for material &, unit of measure &

What causes this issue?

In table MARM (conversion of units of measure), no entry is available
for material &V1& and conversion factor &V2&.
Please maintain the conversion factor to continue.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W6006 - No conversion factor maintained for material &, unit of measure & ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W6006 No conversion factor maintained for material & , unit of measure &
  
  Cause:
  This warning message occurs when the system tries to perform a unit of measure (UoM) conversion for a material, but no conversion factor is maintained between the base unit of measure and the requested unit of measure for that material.
  
  Each material in SAP has a base unit of measure (e.g., EA - Each).
  Sometimes, you need to convert quantities from one unit of measure to another (e.g., from EA to KG).
  For this conversion, SAP requires a conversion factor to be maintained in the material master.
  If the system cannot find this conversion factor, it issues the warning W6006.
  
  
  When does it occur?
  
  During goods movements (goods receipt, goods issue, transfer postings).
  During sales order processing or delivery creation.
  When the system tries to convert quantities between different units of measure for a material.
  In inventory management or MRP runs where unit conversions are necessary.
  
  
  Solution:
  
  
  Maintain the conversion factor in the material master:
  
  Go to transaction MM02 (Change Material).
  Enter the material number.
  Navigate to the Additional Data tab or directly to the Units of Measure view.
  Maintain the required units of measure and their conversion factors relative to the base unit of measure.
  
  For example, if the base unit is EA and you want to convert to KG, enter the conversion factor (e.g., 1 EA = 0.5 KG).
  
  
  Save the changes.
  
  
  
  Check the units of measure used in the transaction:
  
  Verify that the unit of measure entered in the transaction is valid and maintained for the material.
  If a custom or unusual unit of measure is used, ensure it is defined and linked properly.
  
  
  
  If the unit of measure is correct but no conversion is possible:
  
  You may need to create a new unit of measure or adjust the business process to use a unit of measure that has a conversion factor maintained.
  
  
  
  
  Additional Information:
  
  Base Unit of Measure: Defined in the material master (Basic Data 1 view).
  Alternative Units of Measure: Can be maintained in the Units of Measure tab.
  Conversion Factor: Defines how many base units correspond to one unit of the alternative UoM.
  This message is a warning (W), not an error, so the system may allow the transaction to proceed but with potential inconsistencies.
  It is important to maintain correct conversion factors to ensure accurate inventory and valuation.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  W6006 No conversion factor maintained for material & , unit of measure &
  
  
  Cause
  Missing conversion factor between base UoM and requested UoM for the material
  
  
  Solution
  Maintain conversion factor in material master (MM02) under Units of Measure
  
  
  Impact
  Potential incorrect quantity conversions, inventory inaccuracies
  
  
  Transaction
  MM02 (Change Material), relevant goods movement or sales transactions
  
  
  
  
  If you need help with the exact steps in your SAP system or further troubleshooting, feel free to ask!