How To Fix CN491 - Duration for activity & is too large - check

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 491

• Message text: Duration for activity & is too large - check

What causes this issue?

When you multiply with the execution factor for duration in activity
&V1&, you get a value which is too large.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Enter a lower value for the execution factor in the activity.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN491 - Duration for activity & is too large - check ?

  The SAP error message CN491 ("Duration for activity & is too large - check") typically occurs in the context of project management and network planning within SAP. This error indicates that the duration specified for a particular activity exceeds the allowable limits set in the system.
  Cause:
  
  Excessive Duration: The most common cause is that the duration entered for the activity is greater than what the system allows. This could be due to a manual entry error or a misunderstanding of the project requirements.
  System Settings: The system may have predefined limits for activity durations based on configuration settings or project parameters.
  Data Type Limitations: The data type used for storing duration values may have a maximum limit, and exceeding this limit will trigger the error.
  
  Solution:
  
  Check Activity Duration: Review the duration entered for the activity in question. Ensure that it is within a reasonable range and does not exceed the maximum limit set by the system.
  Adjust Project Settings: If the duration is indeed valid but exceeds the system's limits, consider adjusting the project settings or configuration to allow for longer durations if necessary.
  Break Down Activities: If the activity duration is inherently long, consider breaking it down into smaller, more manageable sub-activities. This can help in adhering to the system's limits while still capturing the full scope of work.
  Consult Documentation: Refer to SAP documentation or consult with your SAP administrator to understand the specific limits and configurations that may be affecting your project.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or CN22 (Change Network) to access and modify project activities.
  SAP Notes: Check for any relevant SAP Notes that may address this issue or provide additional guidance on handling activity durations.
  User Exits and Enhancements: If your organization has custom enhancements or user exits, ensure that they are not affecting the duration calculations or limits.
  
  If the problem persists after checking these aspects, it may be beneficial to reach out to your SAP support team for further assistance.