How To Fix /SAPAPO/ATP479 - Invalid quantity to be rounded &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 479

• Message text: Invalid quantity to be rounded &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP479 - Invalid quantity to be rounded &1 ?

  The SAP error message /SAPAPO/ATP479 Invalid quantity to be rounded &1 typically occurs in the Advanced Planning and Optimization (APO) module when there is an issue with the quantity being processed in the Available-to-Promise (ATP) check. This error indicates that the system is trying to round a quantity that is not valid, which can happen for several reasons.
  Causes:
  
  Invalid Quantity: The quantity being processed may be negative, zero, or not conforming to the expected format (e.g., decimal places).
  Configuration Issues: There may be issues with the configuration of the rounding rules in the system.
  Master Data Issues: The material master data or the product master data may have incorrect settings related to quantity or unit of measure.
  Order Quantity: The order quantity being processed may not be compatible with the defined rounding rules in the system.
  
  Solutions:
  
  Check the Quantity: Verify the quantity being processed. Ensure it is a positive number and conforms to the expected format.
  Review Rounding Rules: Check the rounding rules configured in the system. You can do this by navigating to the relevant configuration settings in the SAP system.
  Validate Master Data: Ensure that the material master and product master data are correctly set up, especially the units of measure and any related settings.
  Adjust Order Quantity: If the error is related to a specific order, try adjusting the order quantity to see if it resolves the issue.
  Debugging: If the issue persists, consider debugging the ATP check process to identify where the invalid quantity is being generated.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like /SAPAPO/ATC for checking ATP settings or /SAPAPO/MC90 for checking the configuration of the product.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Documentation: Review the SAP documentation related to ATP and rounding rules for further insights into how quantities are processed.
  
  If the problem continues after trying the above solutions, it may be beneficial to consult with your SAP support team or reach out to SAP support for more in-depth troubleshooting.