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Nobel8
Regular Visitor

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Hello

 

I am struggling with the following issue.

 

I have a flow that I have built to update all the items in a sharepoint list each night at a scheduled time.
The flow will run but errors when it encounters an Excel column with a blank instead of the date.

 

 

The error it provides is:

 

"Unable to process template language expressions for action 'Workflow_Completed' at line '1' and column '23558': 'In function 'converttimezone', the value provided for date time string '' was not valid. The datetime string must match ISO 8601 format.'."

 

Nobel8_0-1637786214581.png

Nobel8_1-1637786230284.png

Nobel8_2-1637786257941.png

 

 

I tried to use the following expression for workflow completed to ignore blanks, where workflow_completed in red points to the dynamic content in the convert time zone action:

 

if(empty(items('Apply_to_each_3')?['Workflow Completed']),null,body('Workflow_Completed'))

 

but I still get the same error.

 

Thank you advance for you help, and please let me know if any additional info is needed.

 

 

 

 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
tom_riha
Super User
Super User

Hello @Nobel8 ,

the Convert Time Zone action can't have an empty input, therefore, if you use the condition and the input is null, the action won't like it - hence the error message.

I'd use the ConvertTimeZone expression instead of the action:

convertTimeZone(date, 'sourceTimeZone', 'destinationTimeZone', 'format')

I'd put it in the if(...) expression directly in the 'Create item' action. If the date is null, update null, otherwise convertTimeZone and store the date, it would go like:

if(empty(items('Apply_to_each_3')?['Workflow Completed']),null,convertTimeZone(items('Apply_to_each_3')?['Workflow Completed'],'Eastern Standard Time','Samoa Standard Time','d'))

The list of all available time zones is here: https://docs.microsoft.com/en-us/previous-versions/windows/embedded/ms912391(v=winembedded.11)



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2 REPLIES 2
tom_riha
Super User
Super User

Hello @Nobel8 ,

the Convert Time Zone action can't have an empty input, therefore, if you use the condition and the input is null, the action won't like it - hence the error message.

I'd use the ConvertTimeZone expression instead of the action:

convertTimeZone(date, 'sourceTimeZone', 'destinationTimeZone', 'format')

I'd put it in the if(...) expression directly in the 'Create item' action. If the date is null, update null, otherwise convertTimeZone and store the date, it would go like:

if(empty(items('Apply_to_each_3')?['Workflow Completed']),null,convertTimeZone(items('Apply_to_each_3')?['Workflow Completed'],'Eastern Standard Time','Samoa Standard Time','d'))

The list of all available time zones is here: https://docs.microsoft.com/en-us/previous-versions/windows/embedded/ms912391(v=winembedded.11)



[ If I have answered your question, please Accept the post as a solution. ]
[ If you like my response, please give it a Thumbs Up. ]

[ I also blog about Power Automate solutions even for non-IT people. ]

Thank you @tom_riha this worked.  Only item that was not functional was the link to current time zones as that gave me a 404

The list of all available time zones is here: https://docs.microsoft.com/en-us/previous-versions/windows/embedded/ms912391(v=winembedded.11)

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