On first click of Back button error out null.But second click not error out until case number generated.

General
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Hi Team,

As part of testing of Upgrade 8.3 platform, found back button click error ed out first time, but on second time click it is not error ed out. This happening for couple of pages until Case number generated.

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@Abhignalahiri please clarify your exact scenario and configuration.

Could you please let me know is your application been built on UIKIt or Theme Cosmos ?

Do you see same behavior in incognito mode and other browser.

Please check your network trace and logs - if 403 errors are found the issue may be related to the reload harness activity.

Back button functionality is applicable only for the screen flow but not process flow. The reason being, For a screen flow we have assignment levels displayed within the case as ex:1, 2, 3 etc., Here Back button can be used which will navigate from one assignment level to the other assignment level.

Whereas for the process flow, We will have Stages but not assignments, Hence for the process flow when we use Back button functionality we are seeing “Previous assignment not found” error as this functionlity looks for Assignment.

For Process flow we must use the OOTB change stage functionality provided in the left menu as the process flow run on Stage level where it will hold the context of the entire case. Else, we need to change the design to screen flows.

As per the product design and best practices, browser back buttons are not recommended to be used for applications that are running on UIKit. Browser back buttons are only supported for apps that are running on Theme Cosmos. Also if you are using Ajax Containers for the tabbed view, then ideally the browser back buttons should automatically get disabled (provided you have placed the ajax container on the portal harness and the entire portal is rendered on it)

Please refer these support articles for your reference:

https://support.pega.com/question/back-button-not-supported

https://community.pega.com/support/support-articles/page-not-loaded-expected-when-browser-clicks-back-button

https://support.pega.com/discussion/traditional-portal-back-button-was-used-opening-case-review-mode-perform-mode

https://support.pega.com/question/browser-button-usage

If you carry out a PSC key word search you will find some suggestions on avoiding using the browser back button.