How To Fix WB2B380 - Negative purchasing quantity is not permitted. Check input data

SAP Error Message - Details

• Message type: E = Error

• Message class: WB2B - Trading Contract

• Message number: 380

• Message text: Negative purchasing quantity is not permitted. Check input data

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 WB2B380 - Negative purchasing quantity is not permitted. Check input data ?

  The SAP error message WB2B380, which states "Negative purchasing quantity is not permitted. Check input data," typically occurs when there is an attempt to process a purchase order or a related document with a negative quantity. This is not allowed in SAP as purchasing quantities must always be positive.
  Causes:
  
  Incorrect Data Entry: A user may have mistakenly entered a negative quantity in the purchase order or related document.
  System Configuration: There may be a configuration issue in the system that allows for negative quantities in certain scenarios, which is not standard practice.
  Data Migration Issues: If data has been migrated from another system, there may be inconsistencies or errors in the data that include negative quantities.
  Custom Code or Enhancements: If there are custom developments or enhancements in the SAP system, they may inadvertently allow or process negative quantities incorrectly.
  
  Solutions:
  
  Check Input Data: Review the purchase order or document where the error occurred. Ensure that all quantities are entered as positive values.
  Correct the Quantity: If a negative quantity was entered by mistake, correct it to a positive value and try processing the document again.
  Review Configuration: If the issue persists, check the configuration settings in the purchasing module to ensure that negative quantities are not allowed.
  Data Validation: Implement data validation checks to prevent negative quantities from being entered in the future.
  Consult Documentation: Review SAP documentation or help resources for any specific notes related to this error message.
  Contact Support: If the issue cannot be resolved through the above steps, consider reaching out to SAP support or your internal IT team for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), and ME23N (Display Purchase Order) to navigate and troubleshoot effectively.
  User Exits and BAdIs: If there are custom developments, check for any user exits or Business Add-Ins (BAdIs) that might be affecting the purchasing process.
  SAP Notes: Search for SAP Notes related to this error message in the SAP Support Portal for any patches or updates that may address the issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.