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big picture tasks duration calculation



Some tasks in the gantt are presented with a certain duration (more than 1 day) and some gets 1 day duration.


I do not understand why there is a difference between the tasks durations, while original estimation is not filled, and the story points are the same.Capture8.PNG

2 answers

Hi @Anna-BigPicture 


I have deactivated the plugin, it didn't solve the issue.


Is there anything else to do? 

Could you explain me how the basic task period is calculated in Big picture?




Anna-BigPicture Marketplace Partner Jul 05, 2021

Hi @Itamar

Here you will find basic rules of scheduling a task - Automation & Automatic scheduling. I hope you find the articles useful.

If something stays unclear - please let me know. 

Please be advised that we would like to study your case individually. Could you please raise a ticket via our Service Desk? This will allow our product specialists and developers to investigate your instance. 

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Hi Anna,


Sure, I will contact the service desk. 


Thank you for your help


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0 votes
Anna-BigPicture Marketplace Partner Jun 30, 2021

Hi @Itamar

Could you please share a screenshot of Start & End date mapping (App configuration >> General >>Task) so I can shed more light on task period calculation? 

According to the general rule, depending on the app's configuration, your tasks might get updated or recalculated during the creation of the Program. By default, the app requires two points on the timeline to generate a taskbar and determine the start and endpoints. 
If a Task with no Start and/or End Dates is added to the Program's scope, the app will pick the Original Estimate value to calculate the duration and set the task's Start date to Creation date.



Do you mean this form:


Thanks for your help,


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Anna-BigPicture Marketplace Partner Jul 02, 2021

Hi @Itamar

Thank you for sharing the screenshot. It is exactly what I meant. As I can see, the applied configuration should not influence an Original Estimate field. 

The issue you described can also be caused by enabling a "Calculating tasks period based on assignee's working days' option. Could you please check a plugin's behavior once it's deactivated? 

image - 2021-07-02T191749.621.png

Hi @Anna-BigPicture Can you please show me how I can configure my project to allow for Start and original estimate to be the default for tasks? We don't want to assign end dates we want auto-schedule bottom up to do this please

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The ONe-Way Sync End Date Field does not show up in my app settings. 

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Anna-BigPicture Marketplace Partner Feb 16, 2022

Hi @amanda_wilson

Welcome to the Community!
Sure! In the App Configuration >> General >> Tasks section, you will find Start & End dater row. Then synchronize Start Date with Jira Start Date field and End Date with Original Estimate, selecting those fields from a drop-down list. Save settings. See my image as a reference. 
image (5).png
If you would like to get more familiar with the dates synchronization mechanism, check my article: BigPicture tutorial - Dates synchronization.
Please be advised that the one-way sync end date field is visible only when the end date field is synchronized with Time Tracking fields (Original Estimate or Time Spent + Remaining Estimate). So, once you synchronize End Date with the Original Estimate field, a one-way sync option will be enabled.

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