How To Fix PPH_FCDM021 - Negative Quantity not allowed: &1

PPH_FCDM021 - Overview

• Message type: E = Error

• Message class: PPH_FCDM - Forecast Demand Messages

• Message number: 021

• Message text: Negative Quantity not allowed: &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PPH_FCDM021 - Negative Quantity not allowed: &1 ?

  The SAP error message PPH_FCDM021, which states "Negative Quantity not allowed: &1," typically occurs in the context of production planning or inventory management within the SAP system. This error indicates that a negative quantity is being attempted in a situation where it is not permitted, such as during the processing of production orders, stock movements, or inventory adjustments.
  
  Cause:
  
  Negative Stock Movement: The system is trying to process a transaction that would result in a negative stock level, which is not allowed for certain materials or in specific configurations.
  Incorrect Configuration: The material master settings may not allow negative stock levels. This can be due to the settings in the material type or plant configuration.
  Data Entry Error: A user may have inadvertently entered a negative quantity in a transaction where only positive quantities are valid.
  Business Logic: The business process may not support negative quantities due to specific business rules or constraints.
  
  
  Solution:
  
  Check Material Master