Creating a project with Zoho Flow and with date custom field fails

Hello,

I think I found a inconsistency in how Zoho handles dates. Let me explain, as it took me 2 hours to figure out where the roblem lies, and didn't found a solution

I'm using a Zoho Flow flow triggered by a Zoho CRM new Deal.

The Deal has 2 date fields : Date_de_debut, Date_de_fin.

When the deal is created, the flow reads the data send by the CRM, and use it to create a Zoho Project project.

The flow adds the relevant fields along with the Date_de_debut as " Start Date" and Date_de_fin as "End Date" fields.

Extract of the JSON received from CRM by Zoho Flow (input)

{
	"Date_de_debut": "2021-01-01",	"Date_de_fin": "2021-01-03",
}

Here is an extract of the JSON send to Zoho Project (input)

{

	"Start Date": "2021-01-01",
	"End Date": "2021-01-03",
}

Which results in the following output:

Zoho Projects says "Input Parameter Does not Match the Pattern Specified"

I found the following ticket which give me some hint:

https://help.zoho.com/portal/en/community/topic/add-task-general-error-6500

Is it correct that The different Zoho applications handles API date differently, and how do we know the correct format ? (from a non developper point of view, as we are talking using Flow here).

It seems from this flow, that I need to convert date from Zoho CRM format to Zoho Project format. Which on a development point of view is very odd. I wish Zoho Project uses the more standard yyyy-mm-dd format (standard for API and consistency, not human display).

Talking about Zoho Flow, this conversion should be handled automatically ;) Non developer user will get angry about this rapidly.

In between, how am I suppose to convert dates between Zoho apps, in Flow ?

Regards