places

<cffunction name="getOrderNumber" returntype="string" hint="Generates the order number for given date and N-th order of the day">
	<cfargument name="N" required="true" hint="The N-th order of the day">
	<cfargument name="theDate" default="#now()#" hint="Date (as String)">
		
	<cfset var n_th_order_of_the_day=arguments.N>
	
	<cfset var dateString=arguments.thedate>
	<!--- The date object. Alternatively, use createdate() to define it.  --->
	<cfset var dateObject=parseDatetime(dateString)>
	
	<cfset var orderNumber=dateFormat(dateObject,"mmddyyyy") & right("0000" & n_th_order_of_the_day,4)>
	
	<cfreturn orderNumber>
</cffunction>

<cfoutput>
Order number 2 of 6/17/2020, getOrderNumber(2,"6/17/2020"): <br>
#getOrderNumber(2,"6/17/2020")# <br><br>

Order number 12 of today (the default date), getOrderNumber(12): <br>
#getOrderNumber(12)#
</cfoutput>

So, how is this number generated?

<cfset ordNum = DateFormat(now(),'mmddyyyy') & NumberFormat(x,'0000') />

x is the order number of that day.

V/r,

^ _ ^