How To Fix WRF_APC577 - Calculation is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC - Messages for Operational Assortment Planning and Control

• Message number: 577

• Message text: Calculation is not possible

What causes this issue?

Calculation is not possible.

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?

You can enter either the basic purchsing price with purchasing price
net/net or purchasing price net/net with markup2.

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 WRF_APC577 - Calculation is not possible ?

  The SAP error message WRF_APC577: Calculation is not possible typically occurs in the context of APC (Activity-Based Costing) or Product Costing processes, especially when working with costing runs or cost estimates in SAP Controlling (CO-PC).
  
  Cause
  The error WRF_APC577 Calculation is not possible usually indicates that the system cannot perform the costing calculation due to one or more of the following reasons:
  
  
  Missing or Incomplete Master Data:
  
  The cost center, activity type, or cost element master data required for the calculation is missing or not properly maintained.
  The routing or bill of materials (BOM) data is incomplete or inconsistent.
  
  
  
  Incorrect or Missing Costing Variant Settings:
  
  The costing variant used for the calculation is not properly configured.
  Parameters such as valuation variant, costing type, or date settings are incorrect or missing.
  
  
  
  Inconsistent or Missing Price/Rate Data:
  
  Activity prices or rates are not maintained or are zero.
  Price determination for materials or activities is incomplete.
  
  
  
  Technical or Configuration Issues:
  
  The system cannot find a valid costing version or costing run.
  The calculation sequence or formula is incorrect or incomplete.
  Missing or incorrect assignment of cost components or cost component split.
  
  
  
  Authorization or System Issues:
  
  User lacks authorization to perform the calculation.
  System inconsistencies or bugs in the costing calculation program.
  
  
  
  
  Solution
  To resolve the WRF_APC577 Calculation is not possible error, follow these steps:
  
  
  Check Master Data:
  
  Verify that all relevant master data (cost centers, activity types, cost elements, BOM, routing) are correctly maintained and active.
  Ensure that the activity prices are maintained in transaction KP26 or KP03.
  
  
  
  Review Costing Variant and Parameters:
  
  Check the costing variant settings in transaction OKKN or during the costing run.
  Confirm that the valuation variant, costing type, and date parameters are correctly set.
  
  
  
  Maintain Prices and Rates:
  
  Ensure that activity prices are maintained and valid for the costing date.
  Check material prices and ensure that price determination is possible.
  
  
  
  Check Costing Run and Version:
  
  If using costing runs (transaction CK40N), verify that the costing run is properly created and released.
  Confirm that the costing version is valid and active.
  
  
  
  Review Cost Component Split and Formulas:
  
  Check the cost component split configuration in OKTZ.
  Verify that any custom formulas or user exits used in costing are working correctly.
  
  
  
  Authorization and System Checks:
  
  Ensure the user has the necessary authorizations.
  Check for any OSS notes or patches related to this error.
  
  
  
  Run Trace or Debug:
  
  If the problem persists, run a trace or debug the costing calculation to identify the exact point of failure.
  
  
  
  
  Related Information
  
  
  Transactions:
  
  CK11N – Create Single Cost Estimate
  CK40N – Costing Run
  KP26 – Maintain Activity Prices
  OKKN – Maintain Costing Variants
  CK13N – Display Cost Estimate
  
  
  
  SAP Notes:
  
  Check SAP Service Marketplace for notes related to WRF_APC577 or costing calculation errors.
  
  
  
  Documentation:
  
  SAP Help Portal: Product Costing and Activity-Based Costing sections.
  SAP Community forums for similar issues and solutions.
  
  
  
  
  If you provide more context (e.g., transaction used, process step, system version), I can help with more specific guidance.