How To Fix AG151 - Requested quantity must not be negative.

SAP Error Message - Details

• Message type: E = Error

• Message class: AG - Nachrichten ATP-Server

• Message number: 151

• Message text: Requested quantity must not be negative.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AG151 - Requested quantity must not be negative. ?

  The SAP error message AG151, which states "Requested quantity must not be negative," typically occurs in the context of inventory management, production planning, or material requirements planning (MRP) when a user attempts to enter a negative quantity for a material or product. This error can arise in various transactions, such as goods movements, production orders, or stock transfers.
  Causes:
  
  Negative Quantity Entry: The most straightforward cause is that the user is trying to enter a negative quantity in a field that does not allow it.
  Incorrect Configuration: The system may be configured in a way that does not allow negative quantities for certain materials or transactions.
  Data Entry Error: A simple typographical error where a user accidentally inputs a negative sign.
  Business Logic: The business process may not allow for negative quantities due to policies or regulations.
  
  Solutions:
  
  Check Input Values: Ensure that the quantity being entered is positive. Review the transaction to confirm that the correct values are being used.
  Review Configuration: If the business process allows for negative quantities in certain scenarios (like returns), check the configuration settings in SAP to ensure that they are set up correctly.
  Consult Documentation: Review the relevant SAP documentation or user manuals for the specific transaction to understand the expected input values.
  User Training: If this error is common among users, consider providing additional training on the correct procedures for entering quantities in SAP.
  Debugging: If the error persists and seems to be related to a specific transaction or custom development, it may require debugging by a technical consultant to identify any underlying issues.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes, such as MIGO (Goods Movement), CO01 (Create Production Order), or MB1A (Goods Withdrawal).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that the user has the appropriate roles and authorizations to perform the transaction, as restrictions may lead to unexpected errors.
  Material Master Data: Review the material master data for the item in question to ensure that it is set up correctly, including settings related to inventory management and valuation.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant for further assistance.