web
You’re offline. This is a read only version of the page.
close
Skip to main content
Community site session details

Community site session details

Session Id :
Power Automate - Building Flows
Unanswered

Bug? The datetime string must match ISO 8601 format (Works when i retry)

(0) ShareShare
ReportReport
Posted on by 174

Hi,

 

Im running the following flow. It works, however if the action is equal to created i get the following error, however if i resubmit the flows without changing a thing it works?

 

Unable to process template language expressions for action 'Convert_time_zone_Start' at line '0' and column '0': 'In function 'converttimezone', the value provided for date time string '' was not valid. The datetime string must match ISO 8601 format.'.

 

Ive also tried to set concurrent to 1 to see if it was a throttle issue, it didnt work?

 

Here is my flow. Ive opened the parts you may wish to see..

 

SomeoneAwesome_0-1662345595523.png

SomeoneAwesome_1-1662345667757.png

 

It fails at the first date time zone convert.

 

Interesting how it doesn't have an issue finding the time for the updated shifts, just the created ones? Which is why i wrote Bug at the top.

 

Cheers

I have the same question (0)
  • SomeoneAwesome Profile Picture
    174 on at
    Re: Bug? The datetime string must match ISO 8601 format (Works when i retry)

    I had the thought of putting in a delay of 1min after the trigger.. It works now for me, but its still looks like a bug.

  • SanmeshG Profile Picture
    1,947 Moderator on at
    Re: Bug? The datetime string must match ISO 8601 format (Works when i retry)

    Hi @SomeoneAwesome !!

     

    From this what I can take a guess is the datetime string value that you are passing is null (does not exist for that item).

     

    So I recommend you use an if condition to check if the datetime string is null or not and then convert it into the required datetime format.

     

    If this helps please accept this as a solution.

     

    Thanks,
    Sanmesh

  • SomeoneAwesome Profile Picture
    174 on at
    Re: Bug? The datetime string must match ISO 8601 format (Works when i retry)

    Cheers, i believe its a buggy trigger because the value is only blank if i don't delay it for the system to catch up for the Get Shifts action to find it as you can resubmit the same failed flow and it works.

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Responsible AI policies

As AI tools become more common, we’re introducing a Responsible AI Use…

Chiara Carbone – Community Spotlight

We are honored to recognize Chiara Carbone as our Community Spotlight for November…

Leaderboard > Power Automate

#1
Michael E. Gernaey Profile Picture

Michael E. Gernaey 722 Super User 2025 Season 2

#2
Tomac Profile Picture

Tomac 461 Moderator

#3
developerAJ Profile Picture

developerAJ 283

Last 30 days Overall leaderboard