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Anas AlamourAnas Alamour 

Formula field reference sibling record

Hello. I have parent object "Contact" with two custom child objects , Contact_Additional_ Info ( Master-Detail) and Program_Registeration ( lookup ). I have already formula field in the second child object(Program_Registeration)  and need it to reference a picklist field in the first sibling object  Contact_Additional_ Info) , is it possible that  a formula field on an object can reference sibling objects ? For some reason , i can't change the type of that formula field to another type or change my design data model. Could you please advise me.

Thanks.
Best Answer chosen by Anas Alamour
PriyaPriya (Salesforce Developers) 
Hi Anas,

No it is not possible to access any field of Contact_Additional_Info in the formula field on Program_registeration as there is no direct relationship between these 2 objects.

If the information was helpful, Kindly mark it as the best answer.

Thanks