How To Fix WV191 - The net/net PP found is negative

SAP Error Message - Details

• Message type: E = Error

• Message class: WV - Messages about Sales Price Calculation

• Message number: 191

• Message text: The net/net PP found is negative

What causes this issue?

The net net purchase price that was determined during price
determination is negative.

System Response

A sales price cannot be calculated for this item.

How to fix this error?

Check the basic purchase price and all the conditions that are used to
determine the net net purchase price. In particular, pay attention to
the absolute conditions with a negative sign. If necessary, set these
condition records to "not relevant to pricing".

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WV191 - The net/net PP found is negative ?

  The SAP error message WV191, which states "The net/net PP found is negative," typically occurs in the context of production planning and material requirements planning (MRP) processes. This error indicates that the system has calculated a negative net requirement for a product, which is not valid in the context of planning and inventory management.
  Causes:
  
  Incorrect Master Data: The material master data may have incorrect settings, such as negative stock levels, incorrect safety stock levels, or incorrect planning parameters.
  Negative Stock: If the stock levels for a material are negative, it can lead to negative net requirements.
  Incorrect Demand Forecasting: If the demand forecast is set too high or if there are incorrect sales orders, it can lead to negative net requirements.
  Incorrect MRP Settings: MRP settings such as lead times, lot sizes, or planning strategies may be incorrectly configured.
  Overlapping Orders: If there are overlapping production orders or purchase orders that are not accounted for correctly, it can lead to discrepancies in net requirements.
  
  Solutions:
  
  Check Material Master Data: Review the material master data for the affected product. Ensure that all relevant fields, such as safety stock, reorder point, and planning parameters, are correctly set.
  Review Stock Levels: Check the stock levels in the system to ensure that there are no negative stock balances. If there are negative stocks, investigate the cause and correct it.
  Adjust Demand Forecasts: Review the demand forecasts and sales orders to ensure they are realistic and accurate. Adjust them if necessary.
  MRP Run: Perform a new MRP run to recalculate the requirements and see if the issue persists after correcting any discrepancies.
  Check Planning Parameters: Review the planning parameters for the material, including lead times, lot sizes, and planning strategies, to ensure they are set correctly.
  Analyze Open Orders: Check for any open production or purchase orders that may be affecting the net requirements and adjust them as necessary.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like MD04 (Stock/Requirements List) to analyze stock levels and requirements for the material in question.
  MRP Configuration: Familiarize yourself with MRP configuration settings in SPRO (SAP Project Reference Object) to ensure that they are set up correctly.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message or provide patches and updates.
  Documentation: Review SAP documentation and help resources for further insights into production planning and MRP processes.
  
  By following these steps, you should be able to identify the root cause of the WV191 error and implement the necessary corrections to resolve it.