How To Fix O3298 - AGA8:Error code 39: Sum of mole fractions out of range

SAP Error Message - Details

• Message type: E = Error

• Message class: O3 - IS-Oil: HPM messages (goods movements, QCI, deliveries)

• Message number: 298

• Message text: AGA8:Error code 39: Sum of mole fractions out of range

What causes this issue?

The sum of the mole fractions is larger than 1.020 or smaller than
0.98. The AGA c-code routine cannot calculate a compression factor.

System Response

The QCI (Quantity Conversion Interface) stops processing.

How to fix this error?

Check the sum of the mole fractions.

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 O3298 - AGA8:Error code 39: Sum of mole fractions out of range ?

  The SAP error message O3298 AGA8: Error code 39: "Sum of mole fractions out of range" typically occurs in the context of process simulation or chemical engineering calculations within SAP's process integration or chemical management modules. This error indicates that the sum of the mole fractions of the components in a mixture does not equal 1, which is a requirement for valid mole fraction calculations.
  Cause:
  
  Incorrect Input Values: The mole fractions of the components in the mixture may have been entered incorrectly, leading to a sum that exceeds or is less than 1.
  Missing Components: Some components may be missing from the input, which can lead to an incorrect total.
  Calculation Errors: There may be errors in the calculations or formulas used to derive the mole fractions.
  Data Entry Errors: Typographical errors during data entry can also lead to this issue.
  
  Solution:
  
  Check Input Values: Review the mole fractions of all components in the mixture. Ensure that they are correctly entered and that their sum equals 1.
  Verify Component List: Ensure that all components that should be included in the calculation are present and accounted for.
  Recalculate: If the mole fractions are derived from other calculations, verify those calculations to ensure they are correct.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on entering mole fractions and the requirements for the AGA8 calculation.
  Test with Known Values: If possible, test the system with known values that should work to see if the error persists. This can help isolate whether the issue is with the specific data set or a broader system issue.
  
  Related Information:
  
  Mole Fraction Definition: The mole fraction of a component in a mixture is defined as the number of moles of that component divided by the total number of moles of all components in the mixture.
  AGA8 Equation: The AGA8 equation is used for calculating the properties of natural gas mixtures, and it requires accurate input of component properties, including mole fractions.
  SAP Support: If the issue persists after checking the inputs and calculations, consider reaching out to SAP support or consulting with a technical expert familiar with the specific module you are using.
  
  By following these steps, you should be able to identify and resolve the cause of the error message O3298 AGA8: Error code 39.