How To Fix CN423 - Enter only positive values between 0-100 for start of interval

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 423

• Message text: Enter only positive values between 0-100 for start of interval

What causes this issue?

The offset for the milestone date may not be <ZH>before</> the activity
finish, ie. it cannot have a negative value.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Enter a positive value for the offset.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN423 - Enter only positive values between 0-100 for start of interval ?

  The SAP error message CN423 ("Enter only positive values between 0-100 for start of interval") typically occurs in the context of project management or cost planning within SAP, particularly when dealing with intervals for cost planning or budgeting.
  Cause:
  This error message is triggered when a user attempts to enter a value for the "start of interval" that is either:
  
  Negative
  Greater than 100
  Not a numeric value
  
  The system expects a percentage value that falls within the range of 0 to 100, as it is often used to define intervals for cost distribution, planning, or other related functions.
  Solution:
  To resolve this error, follow these steps:
  
  
  Check Input Value: Ensure that the value you are entering for the "start of interval" is a positive number and falls within the range of 0 to 100. 
  
  
  Correct Data Entry: If you have mistakenly entered a negative number or a number greater than 100, correct it to a valid percentage value.
  
  
  Review Field Requirements: Make sure you understand the requirements for the field you are entering data into. Sometimes, additional context or documentation may clarify what is expected.
  
  
  Consult Documentation: If you are unsure about the values you should be entering, refer to the SAP documentation or help resources related to the specific module you are working in.
  
  
  Check for System Customizations: If your organization has customized the SAP system, there may be specific rules or validations in place that could affect the acceptable range of values. Consult with your SAP administrator or support team if necessary.
  
  
  Related Information:
  
  SAP Modules: This error is commonly encountered in modules related to Project System (PS), Controlling (CO), or Financial Planning.
  User Training: Ensure that users are trained on the correct data entry practices for the specific SAP transactions they are using.
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message, as there may be patches or updates that address specific scenarios.
  
  If the problem persists after following these steps, it may be beneficial to reach out to your SAP support team for further assistance.