BPA - general routing lead time calculation

Hello community, 

I am facing a question here… how to calculate the lead time for all routing alternates with status buildable at once in IFS Cloud? 

I can do it one by one but when I mark two or more, the option disappears. 

I was thinking about BPA but as I am not an IT girl, I asked GPT for help. Can somebody confirm that this would be doable or propose suitable adjustements? 

START (Scheduled or Manual)

routing_alternatives =
  SELECT contract,
         part_no,
         routing_revision,
         alternative_no
  FROM Routing_Alternative
  WHERE objstate = 'Released'

FOR EACH routing_alternative IN routing_alternatives
LOOP
   CALL Routing_Alternative_API.Calculate_Manufacturing_Lead_Time(
        contract          => routing_alternative.contract,
        part_no           => routing_alternative.part_no,
        routing_revision  => routing_alternative.routing_revision,
        alternative_no    => routing_alternative.alternative_no
   )
END LOOP

END

Thank you for your support,

BR

Petra