"Earliest date to close" shows incorrect results.

Question

Hello, We have a date field in Opportunities called &ldquo;Earliest date to close&rdquo; which is calculated using the following formula from the Expected Close dates of the associated Revenue line items. 
 
 Revenue items with the sales stages &ldquo;closed won,&rdquo; &ldquo;closed lost&rdquo;,"won_in_execution","won_completed", and &ldquo;postponed indefinitely&rdquo; should not be taken into account, so I have created two additional fields in the revenue line items. arc_eligible_expected_close Type: Date (Calculated = Yes) 
 I also created a field null_date_c Type: Date, (not calculated, default = none). 
 This formula gives the right values. Unfortunately, these are not transferred to the earliest close date field of the opportunity. 
 Where is the error? Help and tips are greatly appreciated! Thanks Steffen

Steffen Scheid · Answer

Hi Steffen, 
 
 Your reasoning makes sense, but keep in mind that using maxRelatedDate() will give you the latest closing date (furthest out in the future), not the earliest. 
 For your scenario, a better out-of-the-box option is rollupConditionalMinDate() , and the good thing is that allows conditional filtering without the need for creating a helper field. 
 From what you describe this formula should do it: rollupConditionalMinDate( $revenuelineitems, "date_closed", createList("sales_stage"), createList(createList("Prospecting","Qualification","Needs Analysis","Value Proposition")) ) 
 You will need to add or replace the values on the second list with the values that you want to include on your filter. Let me know if this works for you. Cheers, Andr&eacute;