How To Fix CO838 - No conversion of header quantity into production unit

SAP Error Message - Details

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 838

• Message text: No conversion of header quantity into production unit

What causes this issue?

When the order header quantity was converted from the base unit of
measure to the production unit, it produced a value of 0.
The problem occurred in planned order &V1& with header material &V2&.
The conversion of base unit of measure &V3& to production unit &V4&
caused the problem.

System Response

To prevent an order quantity of 0, the production order will be created
using the base unit of measure (stockkeeping unit).

How to fix this error?

You have the following options:
In Customizing reduce the number of decimal places for production unit
&V4& to 3 or less. This will cause the quantity to be rounded to a
value greater or less than 0.
In the production order change the header unit manually to the same as
the production unit. You will then have to enter a quantity of your
choice.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CO838 - No conversion of header quantity into production unit ?

  The SAP error message CO838 ("No conversion of header quantity into production unit") typically occurs in the context of production orders or process orders when there is an issue with the conversion of quantities between different units of measure. This can happen in various scenarios, such as when trying to confirm production or when processing a production order.
  Cause:
  
  Unit of Measure (UoM) Configuration: The error often arises when the system cannot find a valid conversion factor between the header quantity's unit of measure and the production unit of measure defined in the material master or the order.
  Missing Conversion Factors: If the necessary conversion factors are not defined in the material master for the relevant units of measure, the system will not be able to convert the quantities.
  Incorrect Settings in Material Master: The material master may have incorrect or incomplete settings regarding units of measure.
  Order Type Issues: The order type may not be configured correctly to handle the conversion of units.
  
  Solution:
  
  
  Check Material Master:
  
  Go to the material master (transaction code MM03) and check the units of measure tab.
  Ensure that the base unit of measure and the alternative units of measure are correctly defined and that conversion factors exist.
  
  
  
  Define Conversion Factors:
  
  If conversion factors are missing, you can define them in the material master under the "Units of Measure" section.
  Ensure that the conversion factors are accurate and reflect the correct relationship between the units.
  
  
  
  Review Production Order Settings:
  
  Check the production order (transaction code CO02) to ensure that the header quantity and the production unit of measure are correctly set.
  Verify that the order type is configured to allow for the necessary conversions.
  
  
  
  Check Customizing Settings:
  
  If necessary, review the customizing settings for units of measure in the SAP system (transaction code SPRO).
  Navigate to the relevant sections under "Logistics" and "Material Management" to ensure that the settings are appropriate for your business processes.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on handling unit of measure conversions.
  
  
  
  Testing:
  
  After making changes, test the process again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: MM03 (Material Master), CO02 (Change Production Order), SPRO (Customizing).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that the user has the necessary permissions to make changes to the material master and production orders.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning and control.