Project Turnaround Time Calculated Field - "Invalid Custom Expression" | Community
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HannahKr2
Level 2
July 30, 2025
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Project Turnaround Time Calculated Field - "Invalid Custom Expression"

  • July 30, 2025
  • 1 reply
  • 267 views

Hi,

I'm trying to set up a calculated field from the Tracking Turnaround Time blog. When I paste the formula in the calculation box, I get an error of "This is an invalid custom expression, please try again" with "480" and "2" identified as the errors.

 

Is there an updated formula or page I can reference?

ROUND((DIV(WORKMINUTESDIFF(Actual Completion Date, Actual Start Date),480),2)
 
Thank you!
Best answer by KellieGardner

Try this expression instead

 

ROUND(DIV(WORKMINUTESDIFF({actualCompletionDate},{actualStartDate}),480),2)

1 reply

KellieGardner
Community Advisor
KellieGardnerCommunity AdvisorAccepted solution
Community Advisor
July 30, 2025

Try this expression instead

 

ROUND(DIV(WORKMINUTESDIFF({actualCompletionDate},{actualStartDate}),480),2)
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