How To Fix KPN022 - Unit costings are not possible for required quantities less than zero

SAP Error Message - Details

• Message type: E = Error

• Message class: KPN - Costing: Networks, Projects

• Message number: 022

• Message text: Unit costings are not possible for required quantities less than zero

What causes this issue?

A negative requirement quantity has been maintained. You cannot
maintain a unit costing for the activity in such cases.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KPN022 - Unit costings are not possible for required quantities less than zero ?

  The SAP error message KPN022, which states "Unit costings are not possible for required quantities less than zero," typically occurs in the context of cost planning or product costing within the SAP system. This error indicates that there is an attempt to perform a costing operation where the required quantity is less than zero, which is not permissible.
  Cause:
  
  Negative Quantity: The most common cause of this error is that the system is trying to process a negative quantity for a material or product. This can happen due to incorrect data entry, such as entering a negative quantity in a planning transaction or during a cost calculation.
  Incorrect Configuration: There may be issues with the configuration of the material master or the costing variant that leads to the system interpreting quantities incorrectly.
  Data Inconsistencies: There could be inconsistencies in the master data or transaction data that lead to the system calculating a negative quantity.
  
  Solution:
  
  Check Input Data: Review the input data for the transaction that triggered the error. Ensure that all quantities are entered correctly and that there are no negative values.
  Review Material Master: Check the material master data for the relevant materials. Ensure that the settings for the material are correct and that there are no discrepancies that could lead to negative quantities.
  Costing Variant Configuration: Verify the configuration of the costing variant being used. Ensure that it is set up correctly and that it allows for the required calculations without leading to negative quantities.
  Transaction Review: If the error occurs during a specific transaction (e.g., during a planning run), review the transaction settings and parameters to ensure they are correct.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the error message and related transactions.
  Debugging: If the issue persists, consider debugging the process to identify where the negative quantity is being generated.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CK11N (Create Material Cost Estimate) or CK40N (Costing Run) to understand where the error might be occurring.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to perform the costing operations, as sometimes restrictions can lead to unexpected behavior.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth analysis and assistance.