How To Fix PMRP031 - Quantity for top-level demand &1 must not be negative

SAP Error Message - Details

• Message type: E = Error

• Message class: PMRP - Messages for pMRP

• Message number: 031

• Message text: Quantity for top-level demand &1 must not be negative

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PMRP031 - Quantity for top-level demand &1 must not be negative ?

  The SAP error message PMRP031 indicates that there is an issue with the quantity for a top-level demand in the planning process. Specifically, it states that the quantity must not be negative. This error typically arises in the context of Material Requirements Planning (MRP) when the system is trying to process demand for materials, and it encounters a negative quantity for a top-level demand.
  Cause:
  
  Incorrect Data Entry: A negative quantity may have been entered inadvertently in the demand planning or master data.
  Planning Parameters: The planning parameters or settings may be incorrectly configured, leading to negative demand calculations.
  Demand Management Issues: There may be issues with the demand management process, such as incorrect forecasts or sales orders that have been adjusted improperly.
  Master Data Issues: Problems with the material master data, such as incorrect settings for the material type or planning strategy, can lead to this error.
  
  Solution:
  
  Check Demand Entries: Review the demand entries for the material in question. Ensure that all quantities are positive and correctly reflect the expected demand.
  Review Planning Parameters: Check the planning parameters in the MRP settings. Ensure that they are configured correctly and that there are no settings that could lead to negative demand.
  Analyze Sales Orders and Forecasts: Look into the sales orders and forecasts associated with the material. Ensure that they are accurate and that no adjustments have resulted in negative quantities.
  Correct Master Data: Verify the material master data for the affected material. Ensure that all relevant fields are correctly filled out and that there are no inconsistencies.
  Run MRP Again: After making the necessary corrections, run the MRP process again to see if the error persists.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like MD04 (Stock/Requirements List) or MD02 (MRP Run) to analyze and manage the demand and supply situation.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Documentation: Refer to SAP documentation on MRP and demand management for best practices and troubleshooting steps.
  User Forums: Consider checking SAP community forums or user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the root cause of the PMRP031 error and implement the necessary corrections to resolve it.