How To Fix CNVA_00006_MSG320 - Duration can't be calculated

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVA_00006_MSG - Message class for Content Based Search

• Message number: 320

• Message text: Duration can't be calculated

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 CNVA_00006_MSG320 - Duration can't be calculated ?

  The SAP error message CNVA_00006_MSG320 with the description "Duration can't be calculated" typically occurs in the context of project management or resource planning within SAP, particularly when dealing with project structures, network activities, or scheduling.
  Causes:
  
  
  Missing Data: The error may arise if there are missing or incomplete data entries for the project or activity. This could include missing start or end dates, or missing dependencies between tasks.
  
  
  Incorrect Dates: If the start date is after the end date, or if the dates are not aligned with the project calendar, the system will not be able to calculate the duration.
  
  
  Invalid Activity Relationships: If there are invalid or circular dependencies between activities, the system may not be able to determine the correct sequence and thus cannot calculate the duration.
  
  
  Resource Constraints: If there are constraints on resources that prevent the scheduling of activities, this can also lead to the inability to calculate duration.
  
  
  Configuration Issues: Sometimes, the configuration settings in the project management module may not be set up correctly, leading to issues in duration calculation.
  
  
  Solutions:
  
  
  Check Data Entries: Review the project or activity data to ensure that all necessary fields are filled out correctly. Ensure that start and end dates are valid and logical.
  
  
  Validate Activity Relationships: Check the relationships between activities to ensure that they are correctly defined and do not create circular dependencies.
  
  
  Review Resource Assignments: Ensure that resources are correctly assigned and that there are no constraints that would prevent activities from being scheduled.
  
  
  Adjust Project Calendar: Make sure that the project calendar is set up correctly and that the dates fall within the defined working days.
  
  
  Recalculate: After making the necessary adjustments, try to recalculate the project or activity duration to see if the error persists.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to your version of SAP and the context in which the error occurs.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or CN41 (Project Overview) to review and edit project data.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Consider visiting SAP community forums or user groups for additional insights and solutions from other users who may have encountered the same issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth assistance.