I am having an issue with converting time. I have a form that is being filled out. The form includes date selections. When a user completes the form, I have a Power Automate Trigger that is grabbing the data that fills in an excel sheet send an email to our support desk with the request. The dates are coming in as a 5-digit number. I am now trying to convert that number to an ISO 8601 format, but I keep getting an error when testing the flow. I am using this to format the date formatDateTime(outputs('Get_a_row')?['body/1st Choice Date'],'d')
Error
Action 'Send_an_email_notification_(V3)' failed
Unable to process template language expressions in action 'Send_an_email_notification_(V3)' inputs at line '1' and column '20858': 'In function 'formatDateTime', the value provided for date time string '44263' was not valid. The datetime string must match ISO 8601 format.'.