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On screen Lock Lost error "lost the ability to make this change"

SA-20500

Summary



While using a flow with the "Temporary object" checkbox enabled, an error occurs.

Error Messages



You have lost the ability to make this change because a change elsewhere has taken precedence over the change you made here. Please click on the assignment again to continue.

Steps to Reproduce



Click a button that is configured to launch a modal popup.


Root Cause



The modal popup's flow action pre-activity contained a page-new step with a blank step page.  This caused the primary page to be cleared, and in particular, the pyTemporaryObject property got removed. The out-of-box performFlowAction activity tried to save the object but requires it be locked before it can persist it to the database.

Resolution



Remove the blank page-new step.
Suggest Edit

Published March 5, 2016 - Updated October 8, 2020

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