How To Fix MILL_UA028 - Conversion error when totalling item quantities

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_UA - Messages for Breakdown Order

• Message number: 028

• Message text: Conversion error when totalling item quantities

What causes this issue?

A conversion error occurred during the summation of item quantities.
Items with items that are to be added together must have the same base
unit of measure. The items must also be entered with the same
production unit.

System Response

Summation does not take place. The header quantity remains unchanged.

How to fix this error?

Delete the item and enter it with the correct unit of measure.

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 MILL_UA028 - Conversion error when totalling item quantities ?

  The SAP error message MILL_UA028, which indicates a "Conversion error when totaling item quantities," typically occurs in the context of materials management or production planning when there is an issue with the conversion of quantities between different units of measure. This can happen during various processes, such as goods movements, inventory management, or production order processing.
  Causes:
  
  
  Unit of Measure (UoM) Configuration: There may be an issue with the configuration of units of measure in the material master. If the base unit of measure and the alternative units of measure are not properly defined or if there are inconsistencies, it can lead to conversion errors.
  
  
  Decimal Places: The number of decimal places defined for the units of measure may not match the expected values, leading to rounding issues during calculations.
  
  
  Data Entry Errors: Incorrect data entry during transactions can lead to discrepancies in quantities that cannot be converted properly.
  
  
  Material Master Data Issues: If the material master data is incomplete or incorrect, it can lead to conversion errors when processing transactions.
  
  
  Custom Code or Enhancements: If there are custom developments or enhancements in the system that manipulate quantities, they may not handle conversions correctly.
  
  
  Solutions:
  
  
  Check Unit of Measure Configuration:
  
  Go to the material master (transaction code MM03) and check the units of measure defined for the material. Ensure that the base unit of measure and any alternative units are correctly configured.
  
  
  
  Review Decimal Places:
  
  Verify the decimal places set for the units of measure in the configuration (transaction code OME1). Ensure that they are consistent with the expected values.
  
  
  
  Correct Data Entry:
  
  Review the transaction that triggered the error and check for any incorrect entries. Correct any discrepancies in the quantities.
  
  
  
  Material Master Data Review:
  
  Ensure that the material master data is complete and accurate. Check for any missing or incorrect information that could affect quantity conversions.
  
  
  
  Debug Custom Code:
  
  If there are custom developments, review the code to ensure that it correctly handles unit conversions. Debugging may be necessary to identify the root cause.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates available that resolve known issues.
  
  
  
  Related Information:
  
  Transaction Codes: MM03 (Display Material), MM02 (Change Material), OME1 (Maintain Units of Measure).
  SAP Documentation: Refer to SAP Help documentation for detailed information on unit of measure configuration and material master data management.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP support team or consult with an SAP expert for further assistance.