How To Fix RY827 - Sigma = 0 is not permitted as the starting value

RY827 - Overview

• Message type: E = Error

• Message class: RY - Messages for RM Basis

• Message number: 827

• Message text: Sigma = 0 is not permitted as the starting value

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 RY827 - Sigma = 0 is not permitted as the starting value ?

  The SAP error message RY827, which states "Sigma = 0 is not permitted as the starting value," typically occurs in the context of statistical calculations or analyses, particularly when using the SAP system for planning, forecasting, or statistical evaluations. This error indicates that a statistical function or calculation is attempting to use a standard deviation (sigma) of zero, which is not valid for many statistical operations.
  
  Cause:
  
  Zero Variance: The most common cause of this error is that the data set being analyzed has no variance. This means that all the values in the data set are the same, leading to a standard deviation of zero.
  Incorrect Data Input: There may be an issue with the data input, such as missing values or incorrect data types that lead to a calculation of zero variance.
  
  Configuration Issues: In some cases, the configuration of the statistical model or the parameters set for the analysis may not