How To Fix FMCF815 - Percentage must not be negative

SAP Error Message - Details

• Message type: E = Error

• Message class: FMCF -

• Message number: 815

• Message text: Percentage 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.

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

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message FMCF815 - Percentage must not be negative ?

  The SAP error message FMCF815, which states "Percentage must not be negative," typically occurs in the context of financial transactions or configurations where a percentage value is expected. This error can arise in various scenarios, such as when entering data for discounts, tax rates, or allocation percentages in financial documents or settings.
  Cause:
  
  Negative Value Entry: The most common cause is that a user has inadvertently entered a negative percentage value in a field that only accepts positive values.
  Configuration Issues: There may be a configuration issue in the system where a default value is set to a negative percentage.
  Data Import Errors: If data is being imported from an external source, it may contain negative values that are not valid in the SAP system.
  Custom Code or Enhancements: If there are custom programs or enhancements in place, they might be incorrectly processing percentage values.
  
  Solution:
  
  Check Input Values: Review the input fields where the error occurred and ensure that all percentage values are positive. Correct any negative values.
  Review Configuration Settings: If the error is related to configuration, check the relevant settings in the SAP system to ensure that no negative defaults are set.
  Data Validation: Implement data validation checks to prevent negative values from being entered in the future.
  Debug Custom Code: If custom code is involved, debug the code to identify where the negative value is being generated and correct the logic.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the transaction or module you are working with.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to financial postings, such as FB60 (Invoice), FB70 (Customer Invoice), or during configuration in SPRO.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  User Training: Ensure that users are trained on the correct data entry practices to avoid similar errors in the future.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.