Pushing dates from Excel into SharePoint list, where some dates are blank

[mjburley]

I have a scheduled flow that runs each night, and copies all the dates from a  spreadsheet into a SP list.

The SP list columns are date/time columns.

The Excel columns are currently text strings of the right format (2020-07-01) which push fine into SP date columns.

The date fields in Excel may have dates or be blank. There are 24 odd date columns so using variables is to be avoided...

If they are blank I get the error;

OpenApiOperationParameterTypeConversionFailed. The 'inputs.parameters' of workflow operation 'Update_item' of type 'OpenApiConnection' is not valid. Error details: Input parameter 'item/Planned__Date_1' is required to be of type 'String/date'. The runtime value '""' to be converted doesn't have the expected format 'String/date'.

I can format the spreadsheet columns as needed. Originally as dates, they came through as 44863 (the days since 1900 thing), so i switched them to text to simplify the logic....

When i tried to format the dates in Flow, the ever expanding Apply to Each loops Flow generated lost the relation to the data I required, so I tried variations of Compose etc. but just got more and more lost.

Can someone suggest a way forward; is my approach just wrong? In its simplest it would be a spreadsheet of:

SomeID Field	Date1	Date2
1	15/07/2020	15/07/2020
2	30/08/2020
3		01/01/2020

to insert into SP with matching columns (Date1 and Date2 as date/time columns). Example Flow:

[JohnAageAnderse]

Hello @mjburley 

Did you find a solution or is the need still relevant?

Looking forward to hear from you 🙂

Kind regards, John